... mm)Concavity(inch)Concavity(mm)1230533/41913330312514355311/238164103/3.511/2 , 17/8 , 238/47/51174303/3.5/421 ... /457184603/3.5/411/2 , 13/4 , 21/4 , 25/1638/44/57 ... /4.521/263225603.5/4/5/621/2 , 23/4 , 3 , 31/463/70/76/83235853.5/4/5/ ... 631/4 , 31/283/89246103.5/4/5/63 , 33/16 , 31/4 , 31/2 , 33/476/81/83/ ... 89/95266605/5.5/6/7/833/8 , 31/2 , 4 , 41/4 , 41/286/89/102/108 ...