Thumler's Tumbler Model A-R1, No. 103 is a sturdy one-barrel/rotary tumbler, 3 pound capacity molded rubber barrel. The rock polishing tumbler will receive a discount at the SHOPPING CART. Large motor. Overload protected... if motor for the Thumler's Tumbler, A-R 1, No. 103 overheats, unit automatically shuts off. Shipping weight 6 lbs. For any parts or accessories needed, please see the category "Lapidary parts and supplies" or e-mail and your part may be shipped to you that day. FOB Powell, WY.