3pcs Hexagonal Slots for Adapter Socket Adapter 1/4", 1/2", 3/8 Socket Adapter and 4pcs 1/4 to 3/8X3/8 to 1/4 Inc Allows you to mix and match player sizes for your shots, ratchet grips, extensions and other accessories. The spring-loaded ball bearing on the head rests securely on the handles. Suitable for quick 1/4 in drilling systems or directly in the drillThis set is perfect for your impact wrench or drill bits, and allows you to replace your ratchet with power tools. Hex chuck fits all quick and standard chucksTurns any electric drill into an electric socket screwdriver; Packaged display. Saves time on traditional manual braces. For high-impact engines. Color: Black Material: Chrome Vanadium Stainless Steel Adapter Hex Handle Post Size: 12.5mm ,10mm ,6.35mm The converter includes sizes 1/2 inch (F) * 8/3 inch (M), 3/8 inch (F) * 1/4 inch (M), 3/8 inch (F) * 1/2 inch es (M), 4/1 inch es (F) * 8/3 inch es (M). Quantity: 7pcs/setPackage Contents:3 * Post Hex Handle Adapter4 * Sleeve AdapterOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.