IRWIN Impact Drill AttachmentImpact Tapcon Drive Sleeve Built in hex collar serves as a stop feature for drilling the perfect hole depth for Tapcon screws and other concrete screws Dually compatible with all IRWIN Tapcon bits as well as standard SDS hex drive bits Sleeve slides over the bit and locks onto the hex collar on the bit Fastener drive bits easily attach to the other end Features Sub Brand N A Series Name N A Type Impact drill attachment Package Quantity 1 Warranty None