flap disc,abrasive flap disc,abrasive flap disc with fiberglass backing. 1.All are can make sure the excellent quality, good price. 2.Application: weld grinding, surface preparation, blending, cleaning,and deburring,mainly in used of grinding the workpieces surface of metal,glass, inregrated circuit board and carbon steel, iron, aluminum alloy and etc. 3.Detaildescription Size Max operating speed Max PRM Quantity of Inner/outer box Carton size grit Abrasive: 100*16 80m/s 15300 10/200 57*24*23 24-600 Aluminum oxide and zirconium oxide abrasive 115*22.2 80m/s 13300 10/200 67*27*27 24-600 125*22.2 80m/s 12200 10/200 67*29*27 24-600 150*22.2 80m/s 10200 10/200 35*35*30 24-600 180*22.2 80m/s 8500 10/200 40*40*30 24-600 it can be also be customized according to customer demand.