You're bidding on a brand new, still in original factory seal, Rock Tumbler Refill Kit from Science Kit, item # 36925.  Included in the box is an extra belt, 2 8oz bags of gemstone rocks; 2 bags step 1 coarse-grind powder; 2 bags step 2 fine-grind powder; two bags step 3 polishing powder; 2 bags step 4 final polishing powder; 1 18" silver tone necklace chain; 4 adjustable rings; 3 key chains; 3 pairs hanging earring wires; 12 setting holders in 2 styles; 12 jump ring connectors; and glue.  Bid with confidence; I have been selling on ebay since 1999 and have 100% perfect feedback.  Item(s) come from a smoke-free home. $2 SHIPPING!