1. 3-inch pneumatic polishing machine, fast polishing, strong and 2. Time saving and labor-saving, suitable for polishing and grinding marble, artificial stone, , jade and other stone materials 3. A water refillable polishing machine with a 4500 R.P.M polishing featuring a blade free design for polishing 4. Concentric circle design, polished at a high speed of 4500 rpm to achieve more uniform polishing, improve efficiency, and reduce working time Air pressure: 6KG-8KG Idle speed: 4500R P.M Gas consumption: 113L/min Chassis size: 75mm 100% New Type: Water-feed Pneumatic Sander Usage: For Marble Jade types of stone polishing Colour:blue Material:Metal + Plastic Package Contents: 1 x Water-feed Pneumatic Sander Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.