Quality Material: High strength HSS and ABS keyless chuck, very strong and durable, anti-abrasive, impact resistant. This chuck is made of high-quality HSS material which is durable and sturdy. Fitment: 1/2-20UNF clamping range – this keyless chuck with a maximum capacity of 13mm is robust to minimize vibrations; place a ring between the two chucks. The chuck size must be adjusted between 2mm and 13mm, compatible with 2-13mm drill bits. Easy to Use: This keyless chuck tightens by hand for quick and easy bit changes. Features a quick-change SDS shank for electric hammer drills. Simply insert the bit and hand-tighten for immediate use. Compatible with standard bits in SDS, providing smooth operation and reliable performance. Strong Holder: Equipped with a unique thrust bearing and precise design for a strong grip. Simply tighten the chuck for a secure, stable hold. This chuck allows use of various drill bits for metal, wood, and screw driving applications when set in the drill position. Removable: The adapter is removable and replaceable according to your needs, eliminating the need for additional drill bits. Ideal for SDS, GSB, and GSR systems, electric hand drills, hammer drills, and other standard electric drills.