Enhance your drilling and fastening tasks with this high-quality Bit Holder and Extension Adapter set, crafted from premium carbon steel and chromium-vanadium steel for exceptional strength and durability. Designed for heavy-duty use, these adapters provide reliable performance and a long service life, making them an essential addition to your toolkit. Key Features: · **Durable Hard Steel Construction:** Made from robust carbon steel and chromium-vanadium steel, these adapters offer maximum durability and wear resistance for long-lasting use in demanding applications. · **Ball Detent Design:** Ensures quick and secure connection or disconnection, preventing slipping during operation and keeping your bits firmly in place while driving. · **Universal SDS Plus Shank:** Compatible with most electric screwdrivers, drills, and chucks featuring SDS Plus interfaces, providing versatile and convenient use across various tools. · **Compact and Portable:** The small, lightweight design allows easy storage and transport, fitting effortlessly into tool bags so you can take your bit extensions wherever the job requires. · **Multiple Adapter Sizes Included:** This set contains one hex socket extension adapter and three square extension adapters in different sizes, enabling you to select the appropriate adapter for diverse drilling and fastening needs. Specifications: · Material: Carbon Steel and Chromium-Vanadium Steel · Types and Sizes:  - SDS Plus – 80mm x 1/4" Hex Socket  - SDS Plus – 65mm x 1/4" Square Head  - SDS Plus – 65mm x 3/8" Square Head  - SDS Plus – 75mm x 1/2" Square Head · Quantity: 4 Pieces Package Includes: · 1 x Hex Socket Extension Adapter · 3 x Square Extension Adapters This Bit Holder and Extension Adapter set combines durability, versatility, and ease of use to help you complete your projects efficiently. Perfect for professionals and DIY enthusiasts alike, it ensures quick bit changes and secure fitting for a wide range of drilling and fastening applications.