Description:The spring ball bearing on the head firmly fixes the product in the slot.The socket bit set has different specifications, which can help convert the original bit to the 1/4, 3/8, 1/2 square drill bit.Made of the high-quality chrome vanadium steel material, the product is durable and ultra-hard. The product can change your handheld socket group to a driven socket group.The length of the 1/2 socket bit is 7.2cm, the length of the 1/4 socket bit is 6.5cm, and the length of the 3/8 socket bit is 6.5cm.It is suitable for quickly changing 1/4 inch chuck system or directly inserting drill chuck, and the kit is suitable for impact driver or drill bit.Item Name: Drill NutMaterial: Chrome Vanadium SteelSize Details: 1/2 Socket Bit Length: 7.2cm/2.83" (Approx.)1/4 Socket Bit Length: 6.5cm/2.56" (Approx.)3/8 Socket Bit Length: 6.5cm/2.56" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension differences due to different manual measurements.Package Includes:1 x 1/2 Black Socket Bit1 x 1/2 Silver Socket Bit 1 x 1/4 Black Socket Bit1 x 1/4 Silver Socket Bit1 x 3/8 Black Socket Bit1 x 3/8 Silver Socket Bit