4.4.2 Finger inserts 4.4.2   measurement 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 Select the insert type for the finger ( None , STD , or VACU ). Middle and ring are independent. Select the insert size (ID) from the now-filtered drop-down. With Auto-OD on, Spectre fills the OD automatically; otherwise enter it manually. 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.