Cutting Diameter Description Series Page Depth .750 - 1.500 .18 15B1F 244 Button End Mill, .375 IC 1.000 - 1.500 .25 15B4H 245 Button End Mill, .500 IC 1.000 - 1.500 .25 15B4J (Top-on Style) 246 Button End Mill, .500 IC 2.000 - 6.000 .250 5W6J 248 Button Face Mill, .500 IC 1.250 - 1.500 .25 1DB1H 250 Ceramic Button End Mill, .500 IC 2.000 - 3.000 .25 DW*H 251 Ceramic Button Face Mill, .500 IC 1.500 .37 15B4M 252 Toroid Button End Mill, .750 IC 3.000 - 6.000 .37 5W6N 253 Button Face Mill, .750 IC 2.000 - 6.000 .50 - 1.00 5W6 254 Button Face Mill 2.000 .50 15W4S 256 Toroid Button End Mill, 1.00 IC 238