> **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

# 2104 Series Aluminum REX Shaft (12mm Diameter, 43mm Length)

**Type:** Product page · **SKU:** GB-2104-0012-0043 · **Brand:** [goBilda](https://core-electronics.com.au/brands/gobilda)
**Page:** https://core-electronics.com.au/2104-series-aluminum-rex-shaft-12mm-diameter-43mm-length.html ([markdown](https://core-electronics.com.au/2104-series-aluminum-rex-shaft-12mm-diameter-43mm-length.html.md))

The 43mm length Aluminum REX Shaft can be used to add support to

## Pricing

- **Price:** $3.90 (inc GST) — $3.55 AUD, exc GST
- **Quantity discounts:** 10+ $3.36 (exc GST) · 25+ $3.19 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 31 and Sep 01.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=GB-2104-0012-0043:1` (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-2104-0012-0043:1.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 43mm length Aluminum REX™ Shaft can be used to add support to [1120 Series U-Channel](https://www.gobilda.com/1120-series-u-channel/). This length matches the 43mm inside width of the channel so that when you fasten the shaft in with a screw from each side, it will tie the sides together. It can also be used between two plates or pieces of [1121 Series Low-Side U-Channel](https://www.gobilda.com/1121-series-low-side-u-channel/). Given the large footprint the REX™ shaft has, a few of these working together will create an extremely strong connection between the components.

### Downloads

- [ STEP File ](https://core-electronics.com.au/attachments/localcontent/2104-0012-0043_241742fa465.zip)

### Specs

| Length | 43mm |
|---|---|
| Weight | 11g |
| Material | Aluminum |
| Finish | Clear Anodized |

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/G/B/GB-2104-0012-0043-1.jpg)