The lortone abrasive tumbling kit includes a complete 4-step set of pre-measured abrasives & polishes to finish up to 14 LB of beautiful stones. This kit has coarse & fine silicon carbide abrasives, a pre-polish compound & the finish Polish. Complete instructions included. About lortone for over 50 years, serious lapidaries have considered lortone the standard for performance & durability. Located in Mukilteo, Washington, North of Seattle, lortone has a long history of producing high value, economical lapidary & jewelry equipment built to last for many years. Their tradition of using superior materials & workmanship continues, using Proven designs, premium steel & quality construction. Whether your active in cutting slabs or bookends, polishing cabs, deburring metals, tumbling jewelry or beach agate, consider adding a lortone product to your arsenal. 4-Step quality grit kit. Contains coarse & fine silicon carbides. Includes pre-polish compound & Polish. Will finish up to 14 lbs. Of rock. Complete instructions included.