Erie Tools 100 Piece 1/4" Shank Router Bit Set Tungsten Carbide Tips Woodworking Kit, Dovetails, Slot Cutters & Straight Router 100 piece tungsten carbide router bit kit with 1/4" shank - 2-blade bits on most bits Precision ground cutting edges stay sharper - Heat treated shanks and bodies for durability Bits for use on metal, wood, plastic and masonry - Controlled depth of cut minimizes kickback Comes with the standard bits used in most household projects Fits Bosch, Hilti, Milwaukee, Makita, Dewalt, and Porter Cable