Specification: Product Name: Grinding Head Material: Carbon Steel Color: Black Drill Diameter: 40 Mm / 1.6 In Drill Length: 40 Mm / 1.6 In Outer Handle Diameter: 25 Mm /1.0 In Overall Length: 108 Mm / 4.3 In Interface: 10mm / 0.39 In, 14mm / 0.55 In (Optional) 10mm / 0.39in: Suitable For Type 100 Angle Grinder 14mm / 0.55in: Suitable For Type 115, 125 Angle Grinder Note: 1. Please Allow 1-3cm Measuring Deviation Due To Manual Measurement. 2. Due To The Different Monitor And Light Effect, The Actual Color Of The Item Might Be Slightly Different From The Color Showed On The Pictures. Thank You! 【Durable Material】Rotary Burr Is Made Of Carbon Steel, Hardened To Increase Wear Resistance, Providing You With Excellent Wear Life And Longer Lasting Burrs. Durable Rotary Files Are Designed For Shaping Wood, Plastics And Light Alloys. 【Compatible With】10mm Rotary Burr Is Suitable For Type 115 And Type 125 Angle Grinders. 14mm Rotary Burr Is Suitable For Type 100 Angle Grinders. Please Make Sure The Size Before Use. 【Size Information】Drill Diameter: 40 Mm / 1.6 In, Drill Length: 40 Mm / 1.6 In, Outer Handle Diameter: 25 Mm /1.0 In, Overall Length: 108 Mm / 4.3 In, Interface: 10mm / 0.39 In, 14mm / 0.55 In (Optional). 【Feature & Function】Unique Fine Polishing Treatment, Good Sharpness Cutting Edge, Durable And Wear-Resistant, Especially Suitable For Woodworking Projects. A Rough Coating Provides Fast Cutting While Leaving A Relatively Smooth Surface. 【Wide Application】The Rotary Burr Is Widely Used For Metalwork, Tool Making, Engineering,Model Engineering, Wood Carving, Jewellery Making, Welding, Chamferring, Casting, Deburring, Grinding, Cylinder Head Porting And Sculpting.