This cutting and grinding disc will fit onto a normal 115mm portable electric grinder, and is particularly useful when horn is very hard as often occurs in dairy situations.
Use this flexible disc for less aggressive grinding back of hoof material, and for cleaning affected areas. Safer to use than aggressive cutting discs, but will not last very long as a result.
Diameter is 115mm with centre hole of 25mm.

The electric hoof knife for dairy cattle is also an excellent alternative for hoof trimming.