> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 100 Tooth Hub-Mount Gear (MOD 0.8, 4mm Thick Acetal)

**Type:** Product page · **SKU:** GB-2312-0414-0100 · **Brand:** [goBilda](https://core-electronics.com.au/brands/gobilda)
**Page:** https://core-electronics.com.au/100-tooth-hub-mount-gear-mod-08-4mm-thick-acetal.html ([markdown](https://core-electronics.com.au/100-tooth-hub-mount-gear-mod-08-4mm-thick-acetal.html.md))

The 100 tooth, MOD 0.8 gear will mate with any MOD 0.8 gear, but when building on pattern, the most common partner for this gear is a 20.....

## Pricing

- **Price:** $9.60 (inc GST) — $8.73 AUD, exc GST
- **Quantity discounts:** 10+ $8.29 (exc GST) · 25+ $7.85 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 3 today, and up to 50 more in 7–10 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=GB-2312-0414-0100:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/GB-2312-0414-0100:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

The 100 tooth, MOD 0.8 gear will mate with any MOD 0.8 gear, but when building on pattern, the most common partner for this gear is a 20 tooth pinion gear or servo gear. Using the pinion gear, you can create a 5:1 underdrive or overdrive setup (depending on your application). When used with the 20 tooth servo gear, this combo creates a 5:1 underdrive that facilitates slower speed and five times the torque.

### Downloads

- [ STEP File ](https://core-electronics.com.au/attachments/localcontent/2312-0414-0100_1125934ba36.zip)
- [ Spec Sheet ](https://core-electronics.com.au/attachments/localcontent/2312-0414-0100-spec-sheet_169227fa522.pdf)

### Specs

| Weight | 22g |
|---|---|
| Material | Acetal Plastic |
| Pressure Angle | 20 Degree |

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/G/B/GB-2312-0414-0100-1.jpg)