> **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

# Tamiya 70144 Ball Caster Kit (2 casters)

**Type:** Product page · **SKU:** POLOLU-66 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/tamiya-70144-ball-caster-kit-2-casters.html ([markdown](https://core-electronics.com.au/tamiya-70144-ball-caster-kit-2-casters.html.md))

Tamiya’s steel-ball caster is a good way to give a “third wheel” to a small robot powered by a differential drive. The kit comes with enough parts to make two casters, either 25 mm or 35 mm in height.

## Pricing

- **Price:** $17.70 (inc GST) — $16.09 AUD, exc GST
- **Quantity discounts:** 10+ $15.45 (exc GST) · 25+ $14.96 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 21 and Aug 24.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=POLOLU-66:1` (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/POLOLU-66:1.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 Tamiya 70144 ball caster from Tamiya’s educational construction series is a small steel ball that rests on metal rollers inside a plastic housing. The caster can be assembled in two different ways, so that it has a total height of either 25 mm or 35 mm. The kit contains two complete ball casters and various types of mounting screws as well as spacers for small height adjustments.

Pololu also offer a line of [Pololu ball casters](https://core-electronics.com.au/category/45/pololu-ball-casters), as well as a smaller, [plastic ball caster](https://core-electronics.com.au/plastic-ball-caster-trio.html).

**People often buy this product together with:**

| [![Tamiya 70097 Twin-Motor Gearbox Kit](https://core-electronics.com.au/attachments/localcontent/0J4708_42229d371e.jpg)](https://core-electronics.com.au/tamiya-70097-twin-motor-gearbox-kit.html) | [Tamiya 70097 Twin-Motor Gearbox Kit](https://core-electronics.com.au/tamiya-70097-twin-motor-gearbox-kit.html) |
|---|---|

| [![Tamiya 70145 Narrow Tire Set (2 tires)](https://core-electronics.com.au/attachments/localcontent/0J226_279093ace2.jpg)](https://core-electronics.com.au/tamiya-70145-narrow-tire-set-2-tires.html) | [Tamiya 70145 Narrow Tire Set (2 tires)](https://core-electronics.com.au/tamiya-70145-narrow-tire-set-2-tires.html) |
|---|---|

| [![Tamiya 70101 Truck Tire Set (4 tires)](https://core-electronics.com.au/attachments/localcontent/0J227_3491b68107.jpg)](https://core-electronics.com.au/tamiya-70101-truck-tire-set-4-tires.html) | [Tamiya 70101 Truck Tire Set (4 tires)](https://core-electronics.com.au/tamiya-70101-truck-tire-set-4-tires.html) |
|---|---|

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/t/a/tamiya_70144_ball_caster_kit__2_casters___pololu_66__00.jpg)