Zirconia coated flap disc Application:for grinding tasks such as weld seam dressing on planar surface, sutiable for duty deburing and beveling work on stainlesss and high temperature steels. Advantages of type z 1.Very high stock removal rate 2.Very short maching times 3.Cool grinding properties prevent thermal damages 4.Made of zirconia alumina grain with a high grit strength for maxmum grinding efficiency in general purpose applications. Grit size: 40#, 60#, 80#, 120#, 180#, 220#, 240#, 280#, 320# disc size: 4", 4.5", 5", 6", 7" t27 flat type t29 angle grinding type 27z10016y 100*16 4x5/8 27z11522y 115*22.2 4-1/2x7/8 27z12522y 125*22.2 5x7/8 27z15022y 150*22.2 6x7/8 27z18022y 180*22.2 7x7/8