The Eastwood Mini Belt Sander is a professional quality tool ruggedly designed for many years of reliable service. Adjustable sanding arm 8-1/2” long Abrasive Arm High-torque ball bearing motor Variable speed control Contents : (1) Mini Belt Sander (1) 4 mm Hex-Key Wrench (1) 1.5 mm Hex-Key Wrench (1) 80 Grit, 1/2” x 18” Abrasive Belt (1) 100 Grit, 1/2” x 18” Abrasive Belt (1) 1/4” NPT Air Inlet Coupling Specifications: RPM 16,000 free speed Air Motor Variable speed, 4 vane, ball bearing Air Consumption 7.1 CFM Inlet thread size 1/4” FNPT Required Belt Size 1/2” x 18”, minimum 16,000 RPM