Available in 1 lb and 5 lb bulk sizes, Kingsley North’s 220 Silicon Carbide Grit is a carefully screened abrasive grit for your lapidary needs. Often used for Stage 2 of rock tumbling and other lapidary work, Kingsley North’s 220 Silicon Carbide Grit is typically used in rotary and vibratory tumblers, providing effective abrasion to smooth out rough edges after initial shaping.