#9 x 1-1/4 in. Serrated Flat Head Star Drive Cement Board Screws (185-Pack)

Cement board screws "backer-on" 185 pieces per pkg. Size #10 x1-1/4 inch. Designed for attaching fiber cement backerboard to wood or light gauge, 26 - 20, steel. No pre drilling necessary. #2 square drive prevent bit from slipping. Applications: Bathtub/shower, countertops, floors, sink backsplash. Includes square drive bit.