# 4.4.2 Finger inserts

<span style="font-family: monospace; color: #6b7280;">4.4.2</span> <span style="border: 1px solid #d1d5db; color: #4b5563; padding: 2px 8px; border-radius: 3px; font-size: 0.85em;">measurement</span>

When a bowler uses finger inserts, the spec sheet needs the insert **type**, the insert **size (ID)**, and the drill bit **OD** for each finger. The order you enter them in matters — enter type and size first and Spectre Cloud's auto-suggestions do the rest. For the STD vs. VACU distinction, see **4.4.3**; for the underlying OD concept, see **4.1.6**.

## 🛠️ Recommended Order of Entry

Always enter finger inserts in this order — **insert type first, then insert size** — and let the auto-suggestions handle the rest:

- ✅ **1. Insert type** — select the type first. Spectre Cloud then **filters the size drop-down** to show only the sizes available for that insert type, so you can't pick a size the insert doesn't come in.
- ✅ **2. Insert size (ID)** — choose the size that fits the bowler's finger. The insert size *is* the inner diameter; Spectre does not track ID as a separate value.
- ✅ **3. Let the auto-suggestions work** — with type and size in place, the finger auto-suggestions fill in the rest automatically.

**Note:** The list of insert **types** offered in the drop-down can itself be filtered in the **Settings** section — so you only see the brands and types your shop actually carries, keeping the type list short and relevant.

## ⚙️ What the Auto-Suggestions Do

Once insert type and size are entered:

- ✅ **Autofill Insert OD (2.6.6)** — if Auto-OD is turned on, Spectre selects the drill bit **OD of the hole automatically** based on the insert size, so you don't look it up or calculate it.
- ✅ The filtered size drop-down (from selecting the type first) keeps the choices valid for that specific insert.

**Note:** This is why order matters. Selecting the type first narrows the size list; entering the size then drives the OD auto-fill. Enter them out of order and you lose the filtering and may have to set the OD by hand.

## 📋 Entering Finger Inserts in Spectre Cloud

1. Select the **insert type** for the finger (`None`, `STD`, or `VACU`). Middle and ring are independent.
2. Select the **insert size (ID)** from the now-filtered drop-down.
3. With Auto-OD on, Spectre fills the **OD** automatically; otherwise enter it manually.
4. Repeat for the other finger.

### Related Sections

- 4.4.1 — Round finger holes, no inserts
- 4.4.3 — STD vs. VACU
- 4.4.4 — Oval fingers, no inserts
- 4.1.6 — Insert OD concept: STD vs. VACU, insert size vs. OD
- 2.6.6 — Autofill Insert OD
- 2.6.7 — Auto-Repeat Insert Size: mirror size from ring to middle finger

**Tip:** Build the habit of **type → size → let it fill**. Selecting the insert type first is the single step that makes the rest of the finger-insert entry fast and error-free — the size list filters itself and the OD fills itself in.