Feed Dog (Heavy Duty)

Guaranteed to fit Pfaff Industrial Machine Models:

463 Guaranteed to fit Singer Industrial Machine Models:
1300, 191, 191D, 195K, 196K, 241, 241-13, 251, 245, 281, 31, 31-15, 331K, 366K, 400W, 44, 451K, 491, 600A, 600W, 660A, 771, 95, 96, Centurion 121D, DDL-8700

Also many 31 type--Brother, Consew, Juki, Rex and most other lock stitch machines