Serrated thread design reduces installation torque and provides superior holding power
Excellent for skim coating
Ideal for tightening
Its patented bi-metal technology sets new standards of performance
Multi-Purpose Drill Bits, 5-Pc. Set Category_Brushes & Applicators Serrated thread design reduces installation5 piece multi purpose drill bit set, consists of one each 1 8", 3 16", 1 4", 5 16" and 3 8", for rotary or percussion drilling, cobalt and tungsten carbide tip for maximum hardness and resistance to heat and wear, for use with masonry, concrete, brick, marble, granite, hardened steel, cast metal, fiberglass, plexiglass, ceramic tile, hard wood, soft wood and glass, plastic case.