VALYRIANTOOL is a professional manufacturer and enterprise for all kinds of drill bits and cutting tools. After over 15 years development, our main products are expended to: Metal working drilling tools, Stone working drilling tools, Wood working drilling tools, Screwdriving tools, Threading tools, Packaging & Tool sets. M2 High Speed Steel Premium M2 high speed steel allows the drill bits to run cooler and last longer by making the drill bits harder and stronger; Black and gold surface finish adds lubricity to the tool keeping metal chips from adhering to the tool; 135-degree split point drills on contact eliminating walking along with requiring less force or push; Flatted shank to eliminate slipping in the chuck. Fully Ground Spiral Groove Clears particles quickly, decreases friction and heat for a faster and cooler drilling performance. Anti-Slip Triangular Handle The anti-slip triangular handle design makes the electric drill clamp more tight and the drilling will not slip. 135° Split Point Best for portable drills. Reduce drill walking, require less force than 118° point. Self-centering split point allows you to drill directly to the size needed without any pre-drilling. Black Gold Drill Bits Used in Black gold drill bits used in: cast iron/zinc alloy/low carbon steel/aluminum/copper/plastic/wood. 12PCS 1/8" Black Gold Drill Bits 12PCS 3/16" Black Gold Drill Bits 12PCS 1/4" Black Gold Drill Bits 12PCS 5/16" Black Gold Drill Bits 6PCS 1/2" Black Gold Drill Bits 29PCS 1/16"-1/2" Black Gold Drill Bits Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 76 4.5 out of 5 stars 76 4.5 out of 5 stars 76 4.5 out of 5 stars 76 4.5 out of 5 stars 76 4.5 out of 5 stars 76 Price $10.99$10.99 $15.99$15.99 $18.79$18.79 $28.49$28.49 $29.79$29.79 $37.99$37.99 Diameter 1/8" 3/16" 1/4" 5/16" 1/2" 1/16"-1/2" Quantity 12PCS 12PCS 12PCS 12PCS 6PCS 29PCS