ITEM NAME:100mm 4'' Glass Stone Grinding Cutting Tool Diamond Coated Flat Wheel Disc MO Features High hardness, wear resistance, excellent impact resistance. Mainly used for the plane process of non-metallic hard materials, such as optical glass, ceramics, ferrite, precious stones. Also ideal for the electrolytic and grinding of hard alloy products. Easy and convenient to use, long service life. Description: Material: Electroplating silicon car.Also ideal for the electrolytic and grinding of hard alloy products. 1 x Diamond coated grinding disc wheel. Color: Silver. Thickness: 1mm.