Product Description: Material: Stainless Steel Precision: 5 Suitable for: Angle gauge Drilling diameter angle gauge: 90mm / 3.24inch Angle angle drill: 80mm / 3.15inch General Angle Gauge: 48mm / 1.89inch Quantity: 3Pcs Weight: 100g Package Included:1 x Drill Diameter Angle+1 x Angle Gauge+1 x General Angle Gauge This set of angle gauges is made of high quality stainless steel, high hardness and durable. Diameter drill protractor front edge 50 gauge 118 tip angle of twist drill bits grinding gauge suitable for 118 diameter at the top of not more than 50mm twist drills. Check the angle of the top of the drill bit (60, 70, 90, 110, 118, 125, 135, 150, 160). Cutting tool angle is 60 degrees for 55 degree angle and metric thread, inch thread inspection, blade and special measuring tools for measuring angles Is a set of angle gauge handy in drill bits Angle measuring and inspection of drill sharpener. Comes with a case, convenient to carry.