1/4” Pilot Drill Bit Set for Hole Saw Arbor High Speed Steel and Carbide Tipped Drill Bit Cutting Multiple Material Hard Metal Wood Plastic Stuck Brick with 6 pcs Set

About this item Package: 3 pcs 1/4” 6.35 mm shank silver twist drill bit (89 mm 3.5″ longer) are for wood aluminum copper plastic, 3 pcs 1/4” 6.35 mm shank black twist drill bit (89 mm 3.5″ longer) are for hard metal, 1 of case. Quick replacement: The pilot drill bit set is quick replacement for hole saw mandrel. Flat shank: It’s the flat side for set screw easily. Application: Our pilot drill bit is designed for arbor of hole saw. The silver HSS drill bit is for wood, plastic, alloy steel, aluminum, copper. The black twist drill bit is for hard metal.