Belt Sander Electric Sanding Polishing Grinding Machine, Knife Apex Edge Sharpener, Electric DIY Belt Grinder for DIY Woodworking, Metal, Knife Making (775 Motor). No-load speed: 4500-9000RPM (adjustable) No-load temperature: 26℃-45℃ Noise: 75-85db Belt size: 330 * 30mm Package size: 12*12*18cm Package weight:about 1950g Package List: 1* Belt Sander 10 * Sand Belt 1* Speed Control Power Supply Specifications: Material: Aluminum alloy Color: Silver Plug: US Voltage: AC 110-240V 50/60Hz Spindle: 775 /895spindle motor（optional） Vertical sand-belt machine collocation：12~24V, 1.5A~4.5A, above 3A current is the best working status Power: 100W With Ball bearings, large torque Belt speed :12V 200m/min, 24V 600m/min Tail DC plug port size: 5.5*2.1mm Features: Made of fine quality metal, not easy to rust, wear-resistant, has a long service life. Built-in double bearing, non-slip and dustproof. The base is stable and sturdy, can be placed on the table, labor-saving. The design of the eccentric adjustment wheel can adjust the verticality of the belt. The belt adjustment wheel has a spring structure to automatically adjust the tightness. The worktable can adjust the angle freely, and the slave adjustment wheel adds a slot, which can slide up and down without popping up.