Lg-pp Cement Bd 9x1-1/4

TEXTURED HEAD: Improves mortar adhesion STAR DRIVE: No stripping, 6 points of contact AGGRESSIVE COUNTERSINKING BLADE SYSTEM: Prepares head for flush countersinking TWIST SHANK: Prevents board cracking and clears out debris HIGH-LOW THREAD DESIGN: Drives clean and fast through dense cement board material SELF-PIERCING POINT WITH TYPE 17 CUT: Quickly pierces wood & metal studs (26-20 gauge) and clears out debris CORROSION RESISTANT: Gray epoxy coating is recommended for interior/exterior applications and treated lumber