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. 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. 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: Kueohse