Check the listing for details. Red Mini Glass Grinder 110V with Automatic Water System & Diamond Bit. Condition: New, Made in China. Listed at 56.75 USD. Specifications: Voltage: 110v, 0.1a Power: 65w Rotating Speed: 4200r/Min Working Table Size: 165x165 Mm Machine Size: 195x195x160 Mm Machine Weight: 2kg Color: Red Application: 1.Suitable for Grinding Glass,Ceramics and Other Hard and Brittle Material. 2. Two Models of Grinding Wheel for This Machine, Respectively, Are Mcbl1,Mcbl58, We Will Send One Free Mcbl58grinding Wheel 3.Inside the Rotary Shaft (the Fine Shaft of the Grinding Head) Diameter: 0.7cm, Grinding Wheel Inner Diameter: 0.79cm Features: 1. Mini Size and Easy to Carry 2. Stable and Reliable Performance 3. Automatic Water Available for some Sizes(5/8'' 1'') 4. New Design Switch Avoid Electronic Conduction 5. Glass, Ceramics, Such As Grinding Hard Brittle Materials 6. Grinding Variety of Geomet.