Disc, for slip clutch, 6-1/2 inch O.D., 2-7/16 inch center hole. (1) used in regular slip clutches 368 & 368-1. (2) used in heavy duty slip clutch 12048. Rotary Cutters: 12, 105, 109, 115, 126, 160, 166, 204, 205, 206, 207, 220, 266, 305, 306, 307, 310, 315, 405, 406, 502, 600, 1109, 1115, 1126, 1166, 1206, 1207, 1209, 1220, 1226, 1305, 1306, 1307, 1310, 1315, 1405, 1406, 1600, RB60.