The Thumler's Model B Replacement Belt Drive is an essential replacement component designed specifically for Thumler's Model B Rotary Tumbler systems.Thumler's Model B Rotary Tumbler Replacement Belt DriveDesigned specifically for Model B rotary tumblersEssential drive component for continuous tumbler operationDirect replacement part (SKU: 749013339 UPC: 051442100810)Maintains proper tumbler barrel rotationPerfect for rock hounds and lapidary enthusiasts who need to restore their Model B tumbler to full working condition for polishing stones gems and other materials.