Specifications Item Model Number: KT-1851 Voltage: 110V AC 60Hz Power: 250W Speed: 1400-2000rpm Time Control: 0-60min Outer Roller Size: 7.3 x 5.1 in / 18.5 x 13 cm Inner Roller Size: 7.1 x 3.9 in / 18 x 10 cm Capacity: 1.76 lbs / 800 g Machine Size: 9.1 x 9.1 x 14.9 in / 23 x 23 x 38 cm Net Weight: 20.94 lbs / 9.5 kg Package Content 1 x Magnetic Tumbler 1 x Magnetic Pin 2 x Fuses 0.5A 1 x User Manual Powerful Rotating Strength: This magnetic tumbler utilizes its unique magnetic field distribution, resulting in a solid and stable magnetic effect. Its speed reaches up to 2000 RPM. Use the one-way or two-way rotation according to your needs. Premium Polishing Barrel: The jewelry tumbler polisher is made of tough polycarbonate with high hardness and no leakage. Roller Size: 7.3 x 5.1 in / 185 x 130 mm, Capacity: 1.76 lbs / 800 g. Concise Control Layout: The full-featured clear buttons on the panel allow you to easily set the magnetic tumbler jewelry polisher's time and rotation mode. It can reach a multi-angle full grind of the workpiece, quickly removing rust. User-Friendly Design: The magnetic tumbler polisher has multiple heat dissipation vents and strong fan cooling to avoid the machine from overheating. Moreover, the portable handles on both sides allow you to carry the device easily. Versatile Use Scenarios: The magnetic pin tumbler is suitable for grinding and polishing gold, silver, copper, aluminum, zinc, magnesium, iron, stainless steel, rigid plastics, non-metallic materials, and other precision parts.