Keep your rock tumbling projects running smoothly with this 5-pack of replacement drive belts designed specifically for Chicago Electric HF 93835 single drum rock tumblers. Each belt measures approximately 3 inches OD and is precisely engineered to fit 1.5 lb capacity single drum models, including compatible part numbers 67632, 67631, 65838, 46376, 65840, and 90979. These round belts ensure reliable power transfer from the motor to the tumbling drum, maintaining consistent operation for your rock polishing projects. Note that these belts are exclusively compatible with single drum tumblers and will not fit dual drum 3 lb models. Having spare belts on hand helps minimize downtime and extends the life of your rock tumbling equipment. Keep your hobby going strong with these essential replacement parts.