supply of flexible grinding disc ( with centre depression ) of size 125 mm ( dia. ) x 6 mm ( thick ) x 22.23 mm ( bore ) conforming to en 12413 suitable for minimum working speed 12200 rpm / 80 m / s and for grinding mild steel. grinding disc should have residual life of minimum 18 months from the date of supply. make: grindwell norton / carborandum universal. note: oem / authorised dealership certificate should be uploaded along with the offer. [ warranty period: 18 months after the date of delivery ] , supply of grinding disc ( with center depression ) of size -180 mm ( od ) x 6 to 7 mm ( thickness ) x 22.23 mm ( bore ) , abrasive grain grade a24sb confirming to en 12413 suitable for mild steel grinding maximum operating speed of grinding disc 8500 rpm and for hand grinding machine. note:1. oem or authorised dealers should only quote and authorised dealerships certificate should be uploaded along with the offer, without which the offer will not be considered. 2. grinding disc should have a residual life of a minimum of 18 months from the date of supply. 3. month & year of manufacture of discs should be within 4 months at the time of supply. 4. make: grind well norton / carborundum universal. [ warranty period: 18 months after the date of delivery ] => limited