Features and Benefits:•1-1/2" Diameter•Includes Core Body with Guide Plate & Centering Pin•Thick Wall Design•Usable Cuting Depth 4-1/16"•Use with 12" or 18" SPLINE Adapter Shanks (48-03-3564, 48-03-3565 ) and 12" or 18" SDS-MAX Adapter Shanks (48-03-3572, 48-03-3573)•Use With 7-1/2" Extension 48-95-6085•Use With Guide Plate 48-20-5168 and Centering Pin 48-20-5199Milwaukee's SDS-Max and spline thick wall core bits are used for drilling large through holes into brick, block, concrete. Includes core bit, guide plate, and centering pin.