# Understanding a spec sheet

# Terminology

[![image.png](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/scaled-1680-/vphimage.png)](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/vphimage.png)

**<span class="TextRun SCXW16201504 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW16201504 BCX0">Span:</span></span>**<span class="TextRun SCXW16201504 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW16201504 BCX0"> The distance between the fingers and thumb used for the purpose of gripping</span><span class="NormalTextRun SCXW16201504 BCX0"> t</span><span class="NormalTextRun SCXW16201504 BCX0">he </span><span class="NormalTextRun SCXW16201504 BCX0">ba</span><span class="NormalTextRun SCXW16201504 BCX0">ll.</span></span>

<span class="SCXW16201504 BCX0"><span class="WACImageContainer NoPadding DragDrop BlobObject SCXW16201504 BCX0" role="presentation">![](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/embedded-image-oasyaslk.png)</span></span>

<span class="SCXW16201504 BCX0"><span class="WACImageContainer NoPadding DragDrop BlobObject SCXW16201504 BCX0" role="presentation">**<span class="TextRun SCXW220313751 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW220313751 BCX0">Hole Size and Shape:</span></span>**<span class="TextRun SCXW220313751 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW220313751 BCX0"> The internal measurements and shape of the hole or insert </span><span class="NormalTextRun SCXW220313751 BCX0">used.</span></span></span></span>

[![image.png](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/scaled-1680-/WZBimage.png)](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/WZBimage.png)

<span class="SCXW16201504 BCX0"><span class="WACImageContainer NoPadding DragDrop BlobObject SCXW16201504 BCX0" role="presentation"><span class="EOP SCXW220313751 BCX0" data-ccp-props="{}">**<span class="TextRun SCXW62397140 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW62397140 BCX0">Pitch:</span></span>**<span class="TextRun SCXW62397140 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW62397140 BCX0"> The angle at which a hole is drilled in the ball. Pitch is defined as it relates to the center of the bowling ball. (A hole with “Zero” pitch would be any drilled hole where the center of the hole, if extended, would pass through the center of the ball</span><span class="NormalTextRun SCXW62397140 BCX0">.)</span></span></span></span></span>

[![image.png](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/scaled-1680-/BPnimage.png)](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/BPnimage.png)

<span class="TextRun SCXW164975520 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW164975520 BCX0">T</span><span class="NormalTextRun SCXW164975520 BCX0">he measurement of pitch is the distance that the center of the hole deviates from the center of the ball in a specific direction.</span></span>

[![image.png](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/scaled-1680-/lnDimage.png)](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/lnDimage.png)

<span class="TextRun SCXW28421439 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW28421439 BCX0">The Pitches are based off the X and Y axis of each individual hole, Y being parallel to the centerline.</span></span>

[![image.png](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/scaled-1680-/NtGimage.png)](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/NtGimage.png)

<span style="text-decoration: underline;">*<span class="TextRun SCXW139545409 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW139545409 BCX0">**Forward Pitch**:</span></span>*</span><span class="TextRun SCXW139545409 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW139545409 BCX0"> Term given to any hole where the center of the hole extended would pass above the center of the </span><span class="NormalTextRun SCXW139545409 BCX0">ball.</span></span>

[![image.png](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/scaled-1680-/Dzcimage.png)](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/Dzcimage.png)

<span class="TextRun SCXW141402319 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW141402319 BCX0"> <span style="text-decoration: underline;">***Reverse Pitch:***</span></span></span><span class="TextRun SCXW141402319 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW141402319 BCX0"> Term given to any hole where the center of the hole extended would pass below the center of the </span><span class="NormalTextRun SCXW141402319 BCX0">ball.</span></span>

[![image.png](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/scaled-1680-/jAHimage.png) ](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/jAHimage.png)

<span class="TextRun SCXW24468017 BCX0" data-contrast="auto" lang="EN-US" style="color: rgb(224, 62, 45);" xml:lang="EN-US"><span class="NormalTextRun SCXW24468017 BCX0">**When viewing the back of your hand, forward pitch is towards the inside of your hand and reverse pitch is outside of your hand.**</span></span>

<span class="TextRun SCXW24468017 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW24468017 BCX0"><span class="TextRun SCXW232224981 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span style="text-decoration: underline;">***<span class="NormalTextRun SCXW232224981 BCX0">Side Pitch</span>***</span><span class="NormalTextRun ContextualSpellingAndGrammarErrorV2Themed SCXW232224981 BCX0"><span style="text-decoration: underline;">***:***</span> </span></span><span class="TextRun SCXW232224981 BCX0" data-contrast="none" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun ContextualSpellingAndGrammarErrorV2Themed SCXW232224981 BCX0">The</span></span><span class="TextRun SCXW232224981 BCX0" data-contrast="none" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW232224981 BCX0"> right and left components of pitch in</span></span> <span class="TextRun SCXW232224981 BCX0" data-contrast="none" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW232224981 BCX0">which the center of the drilled hole passes to the right or left of the center</span><span class="NormalTextRun SCXW232224981 BCX0"> of the ball. Parallel </span><span class="NormalTextRun SCXW232224981 BCX0">lateral</span><span class="NormalTextRun SCXW232224981 BCX0"> pitches are </span><span class="NormalTextRun SCXW232224981 BCX0">not the same as</span><span class="NormalTextRun SCXW232224981 BCX0"> zero lateral pitch in both fingers! </span></span><span class="EOP SCXW232224981 BCX0" data-ccp-props="{}"> </span></span></span>

[![image.png](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/scaled-1680-/7PGimage.png)](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/7PGimage.png)

### **<span class="TextRun SCXW148651577 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW148651577 BCX0">Why </span><span class="NormalTextRun ContextualSpellingAndGrammarErrorV2Themed SCXW148651577 BCX0">we</span><span class="NormalTextRun SCXW148651577 BCX0"> do that? </span></span><span class="EOP SCXW148651577 BCX0" data-ccp-props="{}"> </span>**

<span class="TextRun SCXW148651577 BCX0" data-contrast="none" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW148651577 BCX0">The proper fit will allow the customer to use less effort to grip the ball, allowing them to have a more relaxed arm swing and release. To </span><span class="NormalTextRun SCXW148651577 BCX0">accomplish</span><span class="NormalTextRun SCXW148651577 BCX0"> this there is a relationship between span, pitch, hole size and shape</span><span class="NormalTextRun SCXW148651577 BCX0">.</span></span><span class="TextRun SCXW148651577 BCX0" data-contrast="none" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW148651577 BCX0"> </span></span><span class="EOP SCXW148651577 BCX0" data-ccp-props="{}"> </span>

[![image.png](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/scaled-1680-/1eXimage.png)](https://wiki.spectrebowling.com/uploads/images/gallery/2025-02/1eXimage.png) <span class="TextRun SCXW148651577 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW148651577 BCX0">- 50% Span (distance between the holes)</span></span><span class="EOP SCXW148651577 BCX0" data-ccp-props="{}"> </span>

<span class="TextRun SCXW148651577 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW148651577 BCX0">- 30% Pitch (angles of the holes)</span></span><span class="EOP SCXW148651577 BCX0" data-ccp-props="{}"> </span>

<span class="TextRun SCXW148651577 BCX0" data-contrast="auto" lang="EN-US" xml:lang="EN-US"><span class="NormalTextRun SCXW148651577 BCX0">- 20% Hole size and shape</span></span><span class="EOP SCXW148651577 BCX0" data-ccp-props="{}"></span>