grinding disk/abrasive disc for metal/inron 1.first grade material 2.sharply,durabile,strong 3.80m/s,3 nets,for iron grinding disk /abrasive disc for metal/iron1. It is made of first grade material with strong resin bond and high tensile strength fibre glass nets2.medium hard bond,depressed center,black color,2nets in the middle of the disc.3.sharply,durabile and high efficiency when working , ...