Features Versatile Set: Includes 4 types of drill chuck adapters to meet various needs, providing versatility and convenience for different projects. Material: Crafted with high-speed steel for durability and high strength, ensuring long-lasting performance and reliability. Precision Screw: Fine-processed screws ensure safe and secure usage, offering peace of mind during . Quality Construction: Each adapter is expertly made with high-quality materials, ensuring exceptional durability and reliable performance. Enhanced Efficiency: These adapters make work more convenient and labor-saving, improving overall work efficiency and productivity. Features: 1、The set including 4 kinds of drill chuck adapter to meet your various needs. 2、High speed steel material , and of high strength. 3、The screw is fine processed,these adapter can be safely used. 4、Each adapter is well made of and great durability. 5、These adapter will make your work more convenient and labor-saving. Specification: Item Type:Drill Chuck Connector Material:High Speed Steel Package List: 1 Pcs 1/4in Hex Shank 3/8-24UNF Thread Adapter 1 Pcs 1/4in Hex Shank 1/2-20UNF Thread Adapter 1 Pcs 1/2 Round Shank SDS1/2-20UNF Thread Adapter 1 Pcs 1/2 Square Shank SDS1/2-20UNF Thread Adapter Package List 1 Pcs 1/4in Hex Shank 3/8-24UNF Thread Adapter 1 Pcs 1/4in Hex Shank 1/2-20UNF Thread Adapter 1 Pcs 1/2 Round Shank SDS1/2-20UNF Thread Adapter 1 Pcs 1/2 Square Shank SDS1/2-20UNF Thread Adapter