Take a BITE out of the Competition with OUTSVILLE's newest Great White Formula. While we started 4 years ago todays Great White has evolved and been improved miltiple times because we make it ourselves and we listen to the players... Thresher OG (Optimal Grit) has 10% more abrasives than any of our prior formulas which may put it at the highest on the market. The added abrasives give the OG formula more of a tactile feel for players that like to "feel" the chalk going on to the tip and will offer added friction when you get out on the edge. More abrasives also means less fillers so this is our cleanest version to date.. The color is still the Thresher blue that was formulated to match simonis blue to keep the room owners happy......