Impact grade Detent ball for secure socket retention Adapts sockets to power drills and drivers 1/4 inch shank Set includes: (3) 2-3/4 inch adapters, (3) 6 inch adapters: 1/4, 3/8 and 1/2 inch drive On Mar-15-17 at 13:49:56 PDT, seller added the following information: Protect Your Product With a Consumer Priority Service Warranty Protect Your Product With a Consumer Priority Service Warranty