MJR Tumblers 12 Gallon Rock Tumbler Barrel - Replacement Barrel for Tumbling, Rock Polisher Tool, 10 lb

This is a fiberglass drum with a rubber cap that is approximately 8 1/2" long and 7" wide. It is sturdy and well-Constructed, and not just a collection of glued-together PVC pipe fittings, as some customers have wondered. The drum is ideal for use in a variety of settings, including for storing items such as tools, fishing gear or first aid supplies, and for use as a floatation device or marker. Overall, customers have been very pleased with this product, commenting on its durability and usefulness. However, some have noted that the rubber cap may not be completely waterproof, and that the drum may not be large enough for some specific applications.