Diablo 2-1/4" x 17" x 22" SDS-Max Carbide Tipped Core Bit S/HDU Holdown High-speed 5

High-speed 5

Blade Speed: 75 - 250 SFPM

and what material is it made from

consistent punching performance

SDS screws in the joist (screws included)

Diablo 2-1/4" x 17" x 22" SDS-Max Carbide Tipped Core Bit S/HDU Holdown High-speed 5Diameter: 2 1 4" Length: 22" Shank: SDS Max Working Length: 17" Tools: SDS Max Rotary Hammer Drill Materials: Concrete Diablo's SDS Max carbide tipped core bit range provides one of the fastest and longest lasting coring solutions on the market for concrete applications. All in one design strengthens the bit from end to end in order to withstand the stress and impact of high powered hammer drills in concrete. A spiral flute design removes dust faster,