Common specifications of disc Dia. Concavity Thickness Mm Inch Mm Mm 255 10 12 3 305 12 19 3 330 13 25 3 355 14 38 3 410 15 38~50 3 430 17 57 3, 4 460 18 38~60 3, 4 480 19 57 3, 4 510 20 44~63 3, 4, 5 535 21 63 3, 4, 5 560 22 60~85 4, 5, 6 585 23 75~90 4, 5.6 610 24 75~95 4, 5, 6 660 26 86~115 5, 6, 7, 8 710 28 100~130 5, 6, 7, 8 760 30 120~135 6, 7, 8, 10, 12 810 32 120~140 8, 10, 12 910 36 120-200 8, 10, 12 960 38 120-200 8, 10, 12 General packing
