Features: Made of high quality stainless steel, high hardness, and durable in use. 60 degrees for a tooth-shaped angle 55 degree angle and metric thread, inch thread inspection, blade and special measuring tools for measuring angles. Diameter drill front edge of the protractor 50 gauge 118 degree apex angle of twist drills grinding gauge suitable for 118 degree apex diameter of not more than 50mm of grinding twist drills. Check the drill apex angle (60 degree, 70 degree, 90 degree, 110 degree, 118 degree, 125 degree, 135 degree, 150 degree, 160 degree). This is a practical Angle gauge set in drill bits Angle measuring and drill sharpener inspection. Specifications: Material: Stainless Steel Quantity: 3pcs/set Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 3x Drill Angle Gauge