Grip-rite 1/4 x 3-1/4” Hex Drive Hex Washer Head Concrete Screws Zinsser Always drill using a drill

Always drill using a drill motor that is equipped with a support handle

Extractor is packaged with correct size high speed steel drill bit for fast

and metal clamp (same diameter as duct)

Use in treated lumber projects

Mode 4 is self-tapping screw mode which is designed to reduce walking when starting self-tapping screws as well as reduce overdriving

Grip-rite 1/4 x 3-1/4” Hex Drive Hex Washer Head Concrete Screws Zinsser Always drill using a drillHigh holding power. For use in ligh duty anchoring, door and window frames, thresholds, plumbing straps and electrical conduits. Taps its own thread in concrete, brick and other masonry products. Drill the starter hole, drive the screw and the procedure is complete.