Penetrate concrete, concrete blocks, brick, tile or stone with your power drill
Add wall anchors, insert screws, attach studs & install fixtures - must-have set for every homeowner
Hardened carbon steel shanks with extra-tough M-2 carbide tips; lengths 2-1/2" to 4-1/2"
Fluted to remove material from hole as you drill - faster drilling & extended bit life
Eight sizes: 1/8(3mm), 5/32(4mm), 3/16(5mm), 1/4(6mm), 9/32(7mm), 5/16(8mm, 11/32(9mm) & 3/8"(10mm)