Jewelry Polisher Tumbler, Mini Rotary Tumbler for Jewelry Gold Silver Stone Cleaning Polishing and Finishing, Polishing Bead Cleaner Rotary Tumbler Jewelry Polisher Finisher Machine with Polishing Bead ★ The polisher have four different speed settings to provide more care treatment for precious jewelry. Automatic bi-directional rotation time is 0-60 minutes. ★ The rotary tumbler takes the principle of centrifugal motion that can improve work efficiency 5 to 10 times. ★ Designed specifically for jewelry timing polishing. Also suit for steel, iron, copper materials such as surface polishing, rough finishing, precision and gloss polishing. ★ The Barrel is multi sided that made of plexiglass material, leak proof and will not corrode or rust. It can use for long time. ★ Practical and necessary polishing tool for jewelry makers. Excellent for studio and small jewelry projects