Milwaukee 18" SDS+ CORE BIT ADAPTER is designed for efficient drilling of large holes in brick, block, and concrete using SDS Plus rotary hammers. Featuring asymmetrical carbide teeth, this core bit adapter breaks up material more effectively, delivering up to 20% faster drilling speeds. The centering bits ensure easy alignment and precise spot drilling, while the versatile two-piece design allows for use with multiple core bit sizes through a single adapter. Its spiral core body design reduces friction inside the hole and helps with dust removal during operation. For holes deeper than 3 inches, the operator must remove the inner core to continue drilling, as the core bits cut with the putter edge only. Model Number: 48-20-3593