Search query: heavy duty drill bits

Product: Hiltex 10005 HSS Silver and Deming Industrial Drill Bit Set (8 Pieces), 1/2" High speed stainless steel is designed to ensure sharp and fast execution in any material for clean results
Heat treated carbon steel with a black enamel coating is durable and can withstand heavy duty operation for a long tool life
Bit is precision ground with geometry of 135-degree split point for quick penetration and an accurate start
Tri-flat on the shanks of drills are constructed for tighter chucking maximizing security for precise holes
Complete set of 8 pieces come in a convenient storage case for easy storage and portability; sizes include: 1/2" Shank x 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1" Hiltex

Product: Champion Cutting Tool Brute Platinum Twister-XL5 29 Piece 1/16"-1/2" x 64ths HSS Jobber Drill Bit Set-135 Deg Split Point, Water Resistant Index-MADE IN USA Drill 3x Longer (than competitors drills), Drill 2x Faster (than cobalt), Drill Accurate (135 deg split point, tapered web geometry)
Better than cobalt-XL5 is able to flex when cobalt drills chip or snap
Premium high speed steel and NOMO surface treatment for longer tool life, fast penetration, and flexibility
Self centering 135 degree split point prevents drill from walking
Ultimate workhorse for drilling steel, stainless steel, titanium alloys and other hard to drill materials Champion Cutting Tool Corp

Product: Drill America 115 Piece Heavy Duty High Speed Steel Drill Bit Set with Black and Gold Finish (1/16"-1/2", A-Z, 1-#60), KFD Series Manufactured from M2 premium grade high speed steel
For use in a wide range of materials in the iron and steel families such aluminum, iron, stainless steel and other hard metal drilling
135 degree split point tip for self-centering and reducing thrust
Black and gold surface treated for use in stainless steel and other hard metal drilling
115 piece set comes in metal case with sizes #1-60, A-Z & 1/16-1/2 x 64ths Drill America Black and Gold