Strong and Sturdy Construction -- Our drill bit extension bracket is crafted from good-quality metal, providing maximum durability and extending its service life. The chrome-plated surface offers excellent resistance to rust, corrosion, and oxidation. Safety First -- The design of our bit holder allows for easy carrying, preventing accidental dropping of the hexagonal handle. This feature ensures greater safety during high-altitude operations, as you can securely pick up and replace drill bits with one hand. 1/4" Hex Shank Compatibility -- Each package includes 12 pieces of 1/4 hex shank handle keychain extension rods, complete with a black metal hanging buckle. These holders are compatible with most 1/4 fast hex handles, 1/4 hex sockets, electric screwdrivers, hand-held screwdrivers, and drill bits. Large Load Capacity and Longevity -- The powerful ball lock buckle of our drill bit holder can withstand bits tools weighing up to 500g, preventing them from easily falling off. Additionally, the magnetic bit holder socket adapters are made of lightweight and sturdy aluminum alloy, ensuring durability and longevity. Durable Metal Construction: Chrome-plated for rust resistance and long-lasting durability. Secure One-Hand Operation: Prevents accidental drops during high-altitude work. Universal Compatibility: Fits most 1/4" hex shank tools and drill bits. Heavy-Duty Performance: Supports tools up to 500g with secure ball lock buckle. Compact & Portable: Includes 12 holders with hanging buckle for easy storage.