Set of SDS-Plus adapters for drill bits 3 pcs Adapters are manufactured from durable chrome-vanadium steel (CrV). The adapter set allows the use of 1/2", 3/8" and 1/4" sockets with a drill with an SDS-Plus chuck. Product features: manufactured from  chrome vanadium (CrV) tool steel carefully and precisely made SDS-Plus fixing allows the use of 1/2", 3/8" and 1/4" sockets Technical Specifications: Material: chrome vanadium (CrV) tool steel Fixing: SDS-Plus Socket sizes: 1/2", 3/8", 1/4"