slide 1 of 6, Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count, 1 ct
slide 2 of 6, Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count, 1 ct
slide 3 of 6, Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count, 1 ct
slide 4 of 6, Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count, 1 ct
slide 5 of 6, Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count, 1 ct
slide 6 of 6, Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count, 1 ct
slide 1 of 6, Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count, 1 ct
slide 2 of 6, Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count, 1 ct
slide 3 of 6, Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count, 1 ct
slide 4 of 6, Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count, 1 ct
slide 5 of 6, Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count, 1 ct
slide 6 of 6, Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count, 1 ct

Backer-On Rock-On

Backer-On Rock-On #9 x 1-5/8-in Star -Drive Self-drilling Cement board Screws 575 -Count

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Designed for attaching cement backerboard to wood or light gauge steel studs. Patented serrated head design countersinks for flush seating at any angle. Serrated thread forms require less torque for f…