Specifications: Model MR-13A Grinding range3 - 13( 15) Point angle 100 (90) ~ 135 PowerAC 220 V, 50 Hz; AC 110 V, 60 Hz Motor120 W Speed4400 rpm Dimensions32 x 18 x 19 cm Weight10 kg Standard equipment grinding wheel: CBN 1 Eleven collets: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 Collet chuck: ( 2 - 14) 1 Optional equipment grinding wheel: SDC (for carbide) Collets: 2, 2.5, 3.5, 4.5, 5.5, 14, 15 Collet chuck: 15 Attention! The voltage can be 110V or 220V. We default to supply the products that match your country's normal voltage and frequency. If you need anything else, please send us a message. Features: 1. Grinding is accurate and fast, simple operation with no skill to grind. 2. Economical price, which greatly reduces the cost and improves the use effect. 3. With diamond grinding wheel, it can be equipment directly with an accurate angle and long service life. 4. The electrically controlled and powerful DC motor: stable frequency, strong power and long service life. 5. Bearing shaft and locking unit. 6. The machine is with the function of adjusting a point (central point) size, which can effectively coordinate with the material of the drill hole and the rotation speed. It can control the quality precision and extend the life of the drill. Package includes: 1 x CBN 13A grinding wheel 11 x ER20 collet (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)