Bosch 18" SDS MAX® Core Bit Extensions 31182252CBG Brick/Block Vents serve as an

Brick/Block Vents serve as an outlet or inlet for air in a brick/block structure

rotary hammer and hammer only mode

dimensional lumber

Features a friction ring with thru-hole design to ensure quick and easy socket changes

Bosch 18" SDS MAX® Core Bit Extensions 31182252CBG Brick/Block Vents serve as anSDS max rotary hammer bits fit Bosch SDS max hammers, but also competitive SDS max drive hammers and Hilti hammers using TE Y and TE FY shanks. Maintains precise grip for precise drilling. Bosch 18 In. SDS max core bit extension For use in concrete Manufactured to ANSI specification B212. 15 Bit extension in excess of 8 should not exceed 600 RPM