Description Full Spool 7.5" Long, 1.5" Round Hole, Ductile Iron. Fits 330, 335VT - 475, 496, 3800, 3850, 3900, 3950, 340, and 345 Disk. Replaces 1263631C1. This item is a suitable alternative for the following: 864-SMA1263631, D15027, D-15027, 15027, SH1266631, 1263631C1