Overview Reviews Product Description Cobalt prentice drills offer increased hardness, toughness and better wear resistance compared to regular HSS Gold oxide surface finish provides a polished finish and prevents chip building, galling and welding on a workpiece 135° Degree split point for fast penetration and accurate starting (self-centering) which eliminates "walking" and reduces the thrust force needed 1/2" Standard reduced shank to expand the size range capacity of 1/2" drill chucks Ideal for harder steels, heat treated and high temperature alloys, and stainless Clarkson Osborn Catalog Product Videos Custom Field Diameter 1-9/64" Flute length 3" Overall length 6" Shank diameter 1/2" Package quantity/sold as each 1 Product Reviews Write a Review Write a Review × Clarkson-Osborn 1-9/64" x 1/2" Reduced Shank Cobalt Prentice Drill Bit DR51109 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *
Clarkson-Osborn | sku: CLK DR51041 41/64" x 1/2" Reduced Shank Cobalt Prentice Drill Bit DR51041 MSRP: Now: $56.63 Add to Cart Clarkson-Osborn | sku: CLK DR51047 47/64" x 1/2" Reduced Shank Cobalt Prentice Drill Bit DR51047 MSRP: Now: $67.69 Add to Cart Clarkson-Osborn | sku: CLK DR51061 61/64" x 1/2" Reduced Shank Cobalt Prentice Drill Bit DR51061 MSRP: Now: $98.88 Add to Cart Clarkson-Osborn | sku: CLK DR51035 35/64" x 1/2" Reduced Shank Cobalt Prentice Drill Bit DR51035 MSRP: Now: $51.38 Add to Cart
Clarkson-Osborn | sku: CLK DR51047 47/64" x 1/2" Reduced Shank Cobalt Prentice Drill Bit DR51047 MSRP: Now: $67.69 Add to Cart Clarkson-Osborn | sku: CLK DR51061 61/64" x 1/2" Reduced Shank Cobalt Prentice Drill Bit DR51061 MSRP: Now: $98.88 Add to Cart Clarkson-Osborn | sku: CLK DR51035 35/64" x 1/2" Reduced Shank Cobalt Prentice Drill Bit DR51035 MSRP: Now: $51.38 Add to Cart
Clarkson-Osborn | sku: CLK DR51061 61/64" x 1/2" Reduced Shank Cobalt Prentice Drill Bit DR51061 MSRP: Now: $98.88 Add to Cart Clarkson-Osborn | sku: CLK DR51035 35/64" x 1/2" Reduced Shank Cobalt Prentice Drill Bit DR51035 MSRP: Now: $51.38 Add to Cart
Clarkson-Osborn | sku: CLK DR51035 35/64" x 1/2" Reduced Shank Cobalt Prentice Drill Bit DR51035 MSRP: Now: $51.38 Add to Cart