MR-13B Portable Mini Drill Bit Sharpener Twist Drill Sharpening Machine Model MR-13B Drill Bit Grinder Grinding Range ф3-Φ13(Φ15) Point Angle 90-140° Grinding Wheel SDC or CBN Packaging Dimensions 32X18X19CM Power Supply 220V/120W Grinding Wheel Speed: 4400 RPM Weight: 9 kg Gross Weight: 10 kg Dimensions: 28 x 15 x 14 cm Standard Chuck: 11 pcs