the FletaQUALITY MATERIAL: High strength keyless chuck made of HSS and ABS, very strong and durable, anti-abrasive, impact resistant. SIZE RANGE: The chuck size should be adjusted between 2 and 13 mm, which is suitable for 2-13 mm drill bits. EASY TO USE: Just plug it in, hand tighten your standard drill bit and you're done, ready to use standard SDS drill bits, it provides excellent smooth and fluid action and more. STRONG SUPPORT: With unique thrust bearing, delicate design, for strong grip simply by tightening the chuck, tight and stable. REMOVABLE: The adapter is removable, to replace it according to your needs, so you don't need to ask for extra drill bit. Perfect for Bosch SDS, GSB and GSR, electric hand drill, impact drill and more regular electric drill. The 2-13mm keyless chuck with 1/2' adapter makes it easy to use standard/normal drill bits in the SDS and saves it for ordering SDS drill bits. Features: High quality material, durable, tough, long lasting and stable. Applicable scope: Suitable for 1050w power on the impact drill. Multiply the utility of cordless impact drivers and wrenches to do the work of a regular electric drill. The unique torsion stop is easy to handle, resulting in better support. Material: HSS + ABS Size: 12.4 * 4.3cm / 4.9 * 1.7inch Chuck range: 2-13mm Package includes 1 x Keyless Detachable Chuck NOTE: The product can NOT be used counterclockwise!