Product Dimensions: Featuring a 0.39inch SDS-plus shank on one side and a standard 1 or 4inch hex shank on the other, the adapter easily fits most universal 1 or 4inch hex bits. HIGH QUALITY MATERIAL: Made of High-quality materials, it has low resistance and high hardness, so it can last longer than ordinary chuck adapters. The knurling process is anti-slip and can help you release the drill bit quickly. The SDS plus handle ensures a safe and stable connection, effectively reducing vibration during rotating operations, thereby increasing efficiency. The hex connection allows your drill bit to be connected to a of tools with hex shanks, such as screwdriver bits, countersink bits, drill bits, and more. The socket adapter has undergone quality control and , and has a high safety factor. You can rely on its performance and use it with peace of mind. Wide Application: These drill chucks are suitable for most drill bits and cordless electric screwdrivers. Can be used for daily maintenance, car repair, garages, warehouses, offices, homes, etc. Material: alloy steel colour: Silver Package Contents: 5 x SDS-Plus drill chuck adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.