Ruby whetstone for metal precision set of length 10cm #3000 molds, high-grade blades, grinding, finishing, 3,

Material: High-purity sintered alumina (artificial ruby) Size (mm): Rectangle 100*20*5 Triangle 100*8 Circle 100*3 Set contents: 1 rectangle, 1 triangle, 1 circle, 1 TOMIROAD drawstring bag It is ideal for chamfering, fine grinding, and fine polishing of high-hardness materials, both metallic and non-metallic. This is a special whetstone used for precision polishing of dies, high-end blades, etc.