Specification Brand : VALYRIANTOOL BulletPoint1 : 【High Speed Steel】Made of high quality HSS material, ideal for drilling on Mild Steel, Copper, Aluminum, Zinc Alloy etc. BulletPoint2 : 【Durable】Made with HSS M2 steel, fully ground process and black and gold oxide finish resists corrosion and increases the hardness of the drill bit. BulletPoint3 : 【SIZE】The set includes 24pcs of 1/4"(Dia) x 2-3/4"(Flute Length) x 4"(Overall Length) M2 grade cobalt steel twist drill bits. Manufactured to US AISN standard. BulletPoint4 : 【MULTIPLE APPLICATION】Our drill bits are great for professional & DIY Use, Drill bits for soft metal, wood, plastic, Not For Use On Concrete / Masonry / Stainless Steel. Perfect match for workshop or service vehicles. BulletPoint5 : 【3-flatted shank】135° Split Point with 3-flatted shank prevents walking and makes drilling precise. CuttingAngleString : 135.0 degrees FinishType : Gold Oxide,Gold ItemName : VALYRIANTOOL HSS Twist Drill Bits | 24 Pcs Black and Gold Coated Drill Bits Set | 1/4 Inch 3-Flat Shank Jobber Drill Bits for Drilling on Mild Steel, Copper, Aluminum, Zinc Alloy ItemPackageDimensions_Height : 1 inches ItemPackageDimensions_Length : 6 inches ItemPackageDimensions_Width : 5 inches ItemTypeKeyword : jobber-drill-bits Manufacturer : Valyrian Tools-US Material : Metal ProductDescription : Specifications:Material: M2 High Speed Steel, Bright Finish. Point Angle: 135 Degree. Flute Type: Spiral. Shank Type: 3-Flat Shank. Specification Met: ANSI. VALYRIANTOOL 24 Pieces HSS Black and Gold Coated Twist Drill Bits Know about HSS Material: HSS is High Speed Steel High speed steel construction provides ultimate durability, the cutting edge is hardened and honed for sharpness, chatter-free design with staggered cutting teeth ensure the precise countersinking and hole smooth clean. Precise Performance: 135°Split Point with straight shank prevents walking and makes drilling precise Description: Jobber length drill bits, fully ground black and gold finish. You Will Get: 24 pieces 1/4 x 2-3/4 x 4Inch drill bits Notice: Not For Use On Concrete, Masonry, Stainless Steel. ProductSiteLaunchDate : 2020-01-05T08:00:00.000Z Size : 1/4"(24PCS) SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Aluminum,Copper,Steel UnitCount : 1