This is Silicon Carbide 120/220 coarse grit. This grit will work well for the coarse grind in vibrating tumblers or as a second stage in a rotary tumbler after a 60 - 90 grit.
36 Silicon Carbide Grit: 5lbs : Toys & Games
Rock Tumbling Grit Polish for 15 Lbs Tumblers With Plastic Pellets
Before and After - 5 lb Medium Size Mix from The Rock Shed : r/RockTumbling
Rock Tumbling Grit Silicon Carbide 46 Grit thru 14,000 Polish 1 LB thru 20 LB
HIGH QUALITY - 2 pounds of 120/220 Graded Silicon Carbide Grit (MEDIUM) Use for smoothing rock surfaces after initial shaping (Step 2) The rock
2 lbs Tumbler Media Grit,Rock Polishing Grit Media, Works with any Rock Tumbler, Rock Polisher, Stone Polisher,MEDIUM 120/220 Silicon Carbide Grit
Tumbling Lake Superior Rocks from Last Summer
Black Silicon Carbide Lapidary Rock Tumbling Grits
Crushed Rock and Tumbling Material for the Rock Tumbler
Got my son a tumbler for Christmas. He loves it but it came with 4 stages of sand grit that only has 1 use. Is there a source to get this sand
36 Silicon Carbide Grit: 5lbs : Toys & Games