---
product_id: 148537649
title: "Amana Tool RB-128 High Precision Steel Router Collet Reducer 1/2 Overall D x 1/4 Inner D x 1-3/16 Inch Long"
brand: "amana tool"
price: "€ 21.55"
currency: EUR
in_stock: true
reviews_count: 13
category: "Amana Tool"
url: https://www.desertcart.fi/products/148537649-amana-tool-rb-128-high-precision-steel-router-collet-reducer
store_origin: FI
region: Finland
---

# 1-3/16" Overall length for stability 1/4" Shank compatibility 1/2" Diameter precision fit Amana Tool RB-128 High Precision Steel Router Collet Reducer 1/2 Overall D x 1/4 Inner D x 1-3/16 Inch Long

**Brand:** amana tool
**Price:** € 21.55
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your router game with precision that professionals trust!

## Quick Answers

- **What is this?** Amana Tool RB-128 High Precision Steel Router Collet Reducer 1/2 Overall D x 1/4 Inner D x 1-3/16 Inch Long by amana tool
- **How much does it cost?** € 21.55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/148537649-amana-tool-rb-128-high-precision-steel-router-collet-reducer)

## Best For

- amana tool enthusiasts

## Why This Product

- Trusted amana tool brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Lightweight:** Weighs under 1 ounce, easy to handle and store
- • **Trusted Brand Quality:** From Amana Tool, the leader in cutting tool innovation
- • **Versatile Compatibility:** Adapts 1/2" collets to accept smaller 1/4" shank bits effortlessly
- • **Precision Engineered Fit:** Ensures minimal run-out for flawless cuts every time
- • **Durable Steel Construction:** Crafted from high-quality steel for long-lasting reliability

## Overview

The Amana Tool RB-128 is a high precision steel router collet reducer designed to adapt 1/2" collets to accept 1/4" shank bits. Measuring 1-3/16" in length, it is engineered to minimize run-out and ensure stable, accurate cuts. Made from durable steel and weighing just under an ounce, this reducer is a reliable accessory for CNC and router enthusiasts seeking versatility without compromising precision.

## Description

High Precision Collet Reducers are made by Amana Tool, the leading manufacturers of cutting tools. Amana Tool RB-128 High Precision Steel Router Collet Reducer 1/2 Overall D x 1/4 Inner D x 1-3/16 Inch Long enables collet sizes to be reduced to accept CNC and router bits with smaller shank sizes. Reduction sleeves are produced with high quality steel and precisely machined to limit the chance of run-out. Reducing the sleeve is not a long term solution, for best results using the correct size collect is strongly recommended. SPECIFICATIONS: (D) Diameter: 1/2; (d) Shank: 1/4; Overall Length (L): 1-3/16.

Review: Works perfectly to use 1/4” bits in a 1/2” router. - Works perfectly for my needs. I was gifted a monster 1/2” router but the majority of bits found at local stores are all 1/4”. I’m not trying to pretend to be a professional woodworker, my name is not Bob Villa or Norm Abrams. I don’t need commercial grade 1/2” bits to do minor home projects. This makes using more easily available bits possible, which is perfect for me.
Review: Very simple but very useful. - Just a small steel tube with a split on one side but it is very accurately manufactured to fit between a 1/4 inch collet chuck and a 3/16 inch shaft mill or drill while maintaining near perfect concentricity. Opens up a whole additional range of tooling for my routers and die grinders.

## Features

- SPECIFICATIONS: (D) Diameter: 1/2 (d) Shank: 1/4 Overall Length (L): 1-3/16

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Thread Size | 1/2-20 UNC |
| Manufacturer | Amana Tool |
| UPC | 738685128121 |
| Part Number | RB-128 |
| Item Weight | 0.96 ounces |
| Package Dimensions | 5.55 x 1.93 x 0.51 inches |
| Item model number | RB-128 |
| Item Package Quantity | 1 |
| Cutting Diameter | 0.5 Inches |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** Amana Tool
- **Material:** Alloy Steel
- **Item Diameter:** 0.5 Inches
- **Item Weight:** 27.22 g
- **Compatible Devices:** Drilling Machine, Milling Machine

## Images

![Amana Tool RB-128 High Precision Steel Router Collet Reducer 1/2 Overall D x 1/4 Inner D x 1-3/16 Inch Long - Image 1](https://m.media-amazon.com/images/I/41wnJtUdZ1L.jpg)
![Amana Tool RB-128 High Precision Steel Router Collet Reducer 1/2 Overall D x 1/4 Inner D x 1-3/16 Inch Long - Image 2](https://m.media-amazon.com/images/I/41D8TLCZ-lL.jpg)
![Amana Tool RB-128 High Precision Steel Router Collet Reducer 1/2 Overall D x 1/4 Inner D x 1-3/16 Inch Long - Image 3](https://m.media-amazon.com/images/I/31Jj4yqUI1L.jpg)

## Available Options

This product comes in different **Model** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works perfectly to use 1/4” bits in a 1/2” router.
*by T***5 on December 7, 2025*

Works perfectly for my needs. I was gifted a monster 1/2” router but the majority of bits found at local stores are all 1/4”. I’m not trying to pretend to be a professional woodworker, my name is not Bob Villa or Norm Abrams. I don’t need commercial grade 1/2” bits to do minor home projects. This makes using more easily available bits possible, which is perfect for me.

### ⭐⭐⭐⭐⭐ Very simple but very useful.
*by M***S on February 2, 2025*

Just a small steel tube with a split on one side but it is very accurately manufactured to fit between a 1/4 inch collet chuck and a 3/16 inch shaft mill or drill while maintaining near perfect concentricity. Opens up a whole additional range of tooling for my routers and die grinders.

### ⭐⭐⭐⭐⭐ works great without any issues or runout.
*by K***C on August 25, 2025*

most all of my routers have 1/2" collets and it's been so long since i've used the 1/4" collets i have no idea where they even are so rather than ordering new collets for different bran routers, i picked up this adapter. i mounted it and checked the runout and it was less than 0.0001" ( 1 hundred-thousandths), it fits the 1/2" collet perfectly and holds the bit securely with no slip.

## Frequently Bought Together

- Amana Tool RB-128 High Precision Steel Router Collet Reducer 1/2 Overall D x 1/4 Inner D x 1-3/16 Inch Long
- 2Pcs 1/2" to 1/4" Router Collet Reduction Sleeve Tool Bit - A3 Carbon Steel Black
- Whiteside Router Bits 6400 Steel Router Collet with 1/4-Inch Inside Diameter and 1/2-Inch Outside Diameter

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-21*