【Product Specifications】 ・Axis diameter: φ3.0mm ・Diamond grain size: #120 ・Maximum allowable rotation speed: 28000min-1 ・Quantity: 1 set (3 pcs) ・Shape: Cylindrical, round ・Maximum blade diameter (mm): φ4.0 ・*For the safety, Make sure to wear a protective equipment, like protective eyeglasses, a dust protective mask, and the like during working. *Do not use this at a rotation speed, which is more than the maximum allowable rotation speed. ・Model number: EM4