48-20-5150 Milwaukee SDS-MAX and SPLINE Thick Wall Carbide Tipped Core Bit 3.5"Description Milwaukee'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. Includes (1)Core Bit Body(1)Guide Plate & Centering Pin Product Features Thick Wall Design 3 1 2" Diameter 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