Features This angle gauge is made of high quality stainless steel, very hard and durable. Diameter drill front edge of the protractor 50 gauge 118 ° apex angle of the twist drill grinding gauge suitable for 118 ° apex diameter of no more than 50 mm grinding twist drill. Check drill tip angle (60°, 70°, 90°, 110°, 118°, 125°, 135°, 150°, 160°). Cutting tool angle is 60 degrees for a tooth-shaped angle 55 degrees angle and metric thread, inch thread inspection, blade and special measuring tools for measuring angles Is a practical angle measuring device built into drill bits for angle measurement and drill sharpener testing. Descriptions: This angle gauge is made of high quality stainless steel, very hard and durable. It is a practical protractor set in drill bit angle measurement and drill sharpener testing, and comes with a case, convenient for carrying out. Item features: This angle gauge is made of high quality stainless steel, very hard and durable. Diameter drill front edge of the protractor 50 gauge 118 ° apex angle of the twist drill grinding gauge suitable for 118 ° apex diameter of no more than 50 mm grinding twist drill. Check drill tip angle (60°, 70°, 90°, 110°, 118°, 125°, 135°, 150°, 160°). Cutting tool angle is 60 degrees for a tooth-shaped angle 55 degrees angle and metric thread, inch thread inspection, blade and special measuring tools for measuring angles Is a practical angle measuring device built into drill bits for angle measurement and drill sharpener testing. Comes with a case, convenient for carrying. Specifications: Material: stainless steel Accuracy: ± 5° Suitable for: angle measurement Drill diameter protractor: 90mm/3.24 inches Drill protractor: 80mm/3.15 inches General protractor: 50mm/1.97 inch Quantity: 3 pieces Weight: 100g Delivery contents: 1 x drill diameter protractor 1 x drill protractor 1 x General Angle Indicator 1 x suitcase Package List