Features and Benefits:•1-1/8" Diameter•Thin Wall Design•Usable Cuting Depth 3-3/16"•Use With 7-1/2" Extension 48-95-6070•Use with 8" or 12" SDS PLUS Adapter Shanks (48-03-3545, 48-03-3551)Milwaukee®'s SDS-Plus thin wall core bits are used for drilling large through holes into brick, block, concrete.