This rotating flat bottomed cup can improve the specification accuracy and geometric shape of workpieces, making them smooth and glossy. [ Powerful Performance ] The jewelry polishing bucket is made of acrylic, which is sturdy, wear-, and has stable performance. Adopting the principle of centrifugal motion, efficient polishing, and improving work efficiency by 5 to 10 times. Mini jewelry polishing machine flat bottomed cup: Roller size of drum polishing machine: 18cm x 23cm x 23cm. Specially designed for timed polishing, it has excellent polishing effect. Efficient jewelry polishing accessories, easy to use. Very suitable for studios and small jewelry projects. Suitable for mini jewelry polishing machines, 5 speeds and , 10-60 minutes., Weight: 2.22446422358 pounds, Manufacturer: Ehwisbe