The Thumler's Tumbler Model T100 Kit Rock Tumbler is a beginner-level unassembled kit designed for ages 12-16 years. This red/black rock tumbler, made by TRU-SQUARE METAL PRODUCTS, features a skill level of 1. It is a single unit and comes with everything needed to create your own functional rock tumbler, perfect for hobbyists interested in geological work. Made in the United States, this model t100 kit is a great addition for those looking to explore the world of rocks and minerals through hands-on learning. Lid is damaged on side has been ripped but the actual box is fine. Please view pictures. Any questions please ask! Thank you!