This rock tumbler features an efficient design that reduces gemstone polishing time by 50% compared to conventional models. The complete set includes a tumbler unit with leak-proof construction, power cord, three varieties of rough gemstones, polishing compound, and step-by-step instructions. The sealed barrel design prevents liquid spills during operation. Suitable for users aged 8 and above, the tumbler requires no prior experience to operate. This product carries the Nature Bound brand certification and comes with a satisfaction guarantee. All components meet standard safety requirements for educational toys.