1,This Angle gauge set is made of high quality stainless steel, high hardness, and durable in use 2,Diameter drill front edge of the protractor 50 gauge 118 ° summit angle of twist drills grinding gauge suitable for 118 °summit diameter of not more than 50mm of grinding twist drills 3,Check the drill summit angle (60 °, 70 °, 90 °, 110 °, 118 °, 125 °, 135 °, 150 °, 160 °) 4,Is a practical Angle gauge set in drill bits Angle measuring and drill sharpener inspection 5,Cutting tool angle is 60 degrees for a tooth‑shaped angle 55 degree angle and metric thread, inch thread inspection, blade and special measuring tools for measuring angles Descriptions: This Angle gauge set is made of high quality stainless steel, high hardness, and durable in use. It is a practical Angle gauge set in drill bits Angle measuring and drill sharpener inspection,and comes with a case, convenient for carrying out. Features: This Angle gauge set is made of high quality stainless steel, high hardness, and durable in use. Diameter drill front edge of the protractor 50 gauge 118 ° summit angle of twist drills grinding gauge suitable for 118 ° summit diameter of not more than 50mm of grinding twist drills. Check the drill summit angle (60 °, 70 °, 90 °, 110 °, 118 °, 125 °, 135 °, 150 °, 160 °). Cutting tool angle is 60 degrees for a tooth-shaped angle 55 degree angle and metric thread, inch thread inspection, blade and special measuring tools for measuring angles Is a practical Angle gauge set in drill bits Angle measuring and drill sharpener inspection. Comes with a case, convenient for carrying out. Specifications: Material:stainless steel Accuracy: ± 5 ° Suitable For: Angle measurement Drill diameter angle gauge: 90mm or 3.24inch Drill bits angle gauge: 80mm or 3.15inch General angle gauge: 50mm or 1.97inch Quantity: 3Pcs Weight:100g Package Included: 1 x Drill diameter angle Gauge 1 x Drill bits angle gauge 1 x General angle gauge 1 x case Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.