MADE FROM HIGH-SPEED STEEL AND 5% COBALT: improve much higher heat resistance because of cobalt steel's high red hardness, provide strong durable performance compared to typical hss drill bits
CAN BE REPEATEDLY SHARPENED AS NEEDED: cobalt drill bit's hardness is uniform throughout the entire material, so that can be repeatedly sharpened without damaging the cutting edge allowing it to drill more than hss drill bits
APPLICATION: best used for drilling in hard metal, including stainless steel
INCLUDE: 12 pieces of 1/4-inch cobalt drill bits with case
15 Pcs Diamond Drill Bits for Ceramic, Diamond Hole Saw Drill Bit Set Kit, Premium Glass Drill Bit for Bottles,Pots, Marble, Granite Stone, Tile Cutting 0.23 Inch - 2 Inch（6mm - 50mm） YLYL
SAR 30
1 Inch Diamond Hole Saw with Pilot Bit, 1" Tile Hole Saw with Center Drill Bit for Marble, Granite, Ceramics, Porcelain Tiles, 1-1/2" Depth of Cut for Thick Countertops
SAR 50
-9%
Luomorgo 75mm/3 inch Hole Saw, 1 1/4 inch Cutting Depth HSS Bi-Metal Hole Cutter for Wood Cornhole Boards Plastic Drywall & Metal Sheet
SAR 32
DKIBBITH 4-Flute Serrated Masonry Drill Bit Set,11-Piece Black - 3/16" to 1/2" for Concrete, Tile, Brick, Glass, Ceramic,Wood.
SAR 90
