Material: Made of high-quality chrome vanadium steel to resist breaking during use. Spring-loaded ball ensures a tight fit in the driver head to prevent slipping during operation. Suitable for all push-in nut drives and bit inserts, for direct drive via chuck or with 6.35 mm hex holder. Ideal for DIY projects, carpentry, automotive work, and machine repair. Contents: Set of 3 impact socket adapters: 1 x 1/2", 1 x 3/8", and 1 x 1/4". Specifications: New. Material: Chrome vanadium steel (CR-V). Approximate dimensions: - 6.35mm x 6.35mm x 50mm: 6.35mm rod converts to 6.35mm square - 3/8" x 1/4" x 50mm: 1/4" shank converts to 9.53mm square - 1/2" x 1/4" x 50mm: 1/4" shank converts to 12.7mm square Color: As shown in picture. Features: Stainless steel locking ball provides secure retention. Sockets snap on firmly and won't slip. Hexagonal shank prevents slipping during high-speed drill operation. Chrome vanadium steel is heat-treated for durability and impact resistance. Sandblasted finish. Converts power drills into socket drivers. Compatible with screwdriver handles or power screwdriver tools with hex hole or three-jaw chuck. Drive sleeve allows conversion from hex to square drive for socket use. Contents: 3 hex bits.