Western States Hardware 54121-1 Masonry Tapping Screw, 1/4 in Drive, Diamond Point

Hardened steel, diamond point. Designed for quick, secure fastening for a variety of jobs in poured concrete, brick and cinder block/masonry. Diamond point provides self-threading, maximum holding power for fastening conduit clips, furring strips, junction boxes, expansion joints, wall partitions/insulation, stud track, window/door frames, duct strap, gutters, joist hangers, shelves, signs and cabinets. Blue.