5 Best Rock Tumblers - Dec. 2021 - BestReviews
Single-barrel rock tumblers can cost between $70 and $140, while double-barrel tumblers can cost up to $300. We look at rock tumblers with rubber barrels and rock tumblers with plastic barrels, noting the pros and cons of each. For example, rubber barrels are durable and quiet. Plastic barrels are noisy but more affordable.