It is a penumatic sander which widely used for auto repair, Jeans grinding, stone grinding. Description: Taiwan Original Movement,Long Service Life Compact Structure, Easy to Use it, Hard Torsion High Quality, Widely used on Auto-Repair, Stone Grinding, Jeans Grinding Specification: Speed: 25000rpm Chuck size: 6mm/3mm PSI:4CFM Machine Weight:0.4kg Total Weight:0.7kg Accessories: Air Polisher 1pc ...