Diamond Machining Technology (DMT) W4K Mini Diamond Knife Sharpener Whetstone Set, 4 Pack
Includes blue coarse grit 325 mesh, green extra fine 1200 mesh, black extra coarse grit 220 mesh, and red fine grit 600 mesh. The red fine stone is a machinist stone which features 1" continuous diamond area specially designed with a machinist in mind. Each diamond stone measures 4 3/8" x 7/8". Black nylon storage case with carrying strap. Hang packaged.