Features: Industrial pneumatic sander delivers powerful air driven operational for finishing, ideal for professional and DIYers requiring prolonged sanding with smooth, even results. Enabling quick connection to various air supply in workshops or home garages without adapter hassles. Aluminum construction reduce fatigue during extended use while maintaining durability, perfect for mobile applications requiring frequent tool repositioning. Speed control allows adjustable settings for processing across wood, metal, ensuring versatile grinding and polishing. Safety enhanced design includes nonslip grip and lock mechanism to prevent accidental starts, making this air sander for high demanding industrial environments like auto body shops and metal fabrication. Specifications: Component:Aluminum Type:B/A/C/D A:Approx.7.5x10cm/2.95x3.94inch B:Approx.7.5x13cm/2.95x5.12inch C:Approx.7.5x10cm/2.95x3.94inch D:Approx.11x10cm/4.33x3.94inch Package Includes: 1Pc Pneumatic Square Grinder note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.