---
product_id: 570547575
title: "TEKTON Impact Adapter/Reducer Set, 6-Piece (1/4, 3/8, 1/2, 3/4 Inch Drive) | SIA99026"
brand: "tekton"
price: "¥849"
currency: JPY
in_stock: false
url: https://www.desertcart.jp/products/570547575-tekton-impact-adapter-reducer-set-6-piece-1-4-3
store_origin: JP
region: Japan
---

# 6 versatile drive size combos 8660 Nickel-Chromium-Molybdenum steel Spring-loaded detent ball lock TEKTON Impact Adapter/Reducer Set, 6-Piece (1/4, 3/8, 1/2, 3/4 Inch Drive) | SIA99026

**Brand:** tekton
**Price:** ¥849
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Unlock Every Drive Size, Master Every Task!

## Quick Answers

- **What is this?** TEKTON Impact Adapter/Reducer Set, 6-Piece (1/4, 3/8, 1/2, 3/4 Inch Drive) | SIA99026 by tekton
- **How much does it cost?** ¥849 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/570547575-tekton-impact-adapter-reducer-set-6-piece-1-4-3)

## Best For

- tekton enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Crafted from heat-treated 8660 Nickel-Chromium-Molybdenum steel for unmatched strength and longevity.
- • **Secure Socket Grip:** Spring-loaded detent ball ensures your sockets stay locked in place—no more dropped tools on the job.
- • **Customizable Engagement:** Detent pin hole lets you choose between friction ring or pin engagement for ultimate control.
- • **Corrosion-Resistant Finish:** Manganese phosphate coating protects your adapters from rust, keeping your toolkit looking sharp.
- • **Expand Your Socket Arsenal:** Seamlessly adapt between 1/4", 3/8", 1/2", and 3/4" drives to cover every job with precision.

## Overview

The TEKTON 6-Piece Impact Adapter/Reducer Set (SIA99026) is engineered from premium 8660 Nickel-Chromium-Molybdenum steel with a corrosion-resistant manganese phosphate finish. Designed for impact drivers, it offers six versatile drive size conversions (1/4", 3/8", 1/2", 3/4") with secure spring-loaded detent ball locking and customizable detent pin engagement, expanding your socket system’s capability and durability for professional-grade performance.

## Description

The 6-piece TEKTON Impact Adapter/Reducer Set creates a solution for lost or broken sockets, fills the gaps in incomplete size ranges, and extends the capability of your existing socket system. The adapters and reducers work with both friction ring and detent pin impact wrench anvils. Made from 8660 Nickel-Chromium-Molybdenum that is precisely heat treated for superior strength and protected by a corrosion-resistant manganese phosphate finish.

## Features

- Includes 1/4 in. drive (F) x 3/8 in. (M) adapter; 3/8 in. drive (F) x 1/2 in. (M) adapter; 1/2 in. drive (F) x 3/4 in. (M) adapter; 3/8 in. drive (F) x 1/4 in. (M) reducer; 1/2 in. drive (F) x 3/8 in. (M) reducer; 3/4 in. drive (F) x 1/2 in. (M) reducer
- Engineered for use with impact drivers
- Multiplies the range and capability of your socket system
- Spring-loaded detent ball securely latches onto sockets, preventing them from being dropped
- Detent pin hole on one side allows user to choose whether to engage a pin
- Made from 8660 Nickel-Chromium-Molybdenum

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | TEKTON |
| Part number | SIA99026 |
| Item Weight | 340 g |
| Product Dimensions | 16 x 5.59 x 5.59 cm; 340.19 g |
| Item model number | SIA99026 |
| Size | 6-Piece Adapter/Reducer Set |
| Finish | Manganese Phosphate Finish |
| Material | Metal |
| Power source type | Electric or pneumatic drive tools |
| Item Package Quantity | 1 |
| Number Of Pieces | 6 |
| Compatible Fastener Range | compatible with a wide range of standard fasteners including bolts, screws, and nuts |
| Included components | 1/2 in. drive (F) x 3/4 in. (M) adapter, 1/2 in. drive (F) x 3/8 in. (M) reducer, 1/4 in. drive (F) x 3/8 in. (M) adapter, 3/4 in. drive (F) x 1/2 in. (M) reducer, 3/8 in. drive (F) x 1/2 in. (M) adapter, 3/8 in. drive (F) x 1/4 in. (M) reducer |
| Batteries Required? | No |

## Product Details

- **Brand:** TEKTON
- **Material:** Metal
- **Finish type:** Manganese Phosphate Finish
- **Number of pieces:** 6
- **Drive Bit Shank Style:** Hex

## Images

![TEKTON Impact Adapter/Reducer Set, 6-Piece (1/4, 3/8, 1/2, 3/4 Inch Drive) | SIA99026 - Image 1](https://m.media-amazon.com/images/I/610-CMXyYxL.jpg)
![TEKTON Impact Adapter/Reducer Set, 6-Piece (1/4, 3/8, 1/2, 3/4 Inch Drive) | SIA99026 - Image 2](https://m.media-amazon.com/images/I/51XVpuu+CXL.jpg)
![TEKTON Impact Adapter/Reducer Set, 6-Piece (1/4, 3/8, 1/2, 3/4 Inch Drive) | SIA99026 - Image 3](https://m.media-amazon.com/images/I/61c5vthEGRL.jpg)

## Available Options

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

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**Shop now:** [https://www.desertcart.jp/products/570547575-tekton-impact-adapter-reducer-set-6-piece-1-4-3](https://www.desertcart.jp/products/570547575-tekton-impact-adapter-reducer-set-6-piece-1-4-3)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-25*