Welting Foot Set With Teeth For Pfaff Industrial Walking Foot machines.Double toe outside foot with teeth on both outside and inside foot for a better feeding action.This high quality welting foot set will fit PFAFF industrial machine models : 145, 146, 195, 335, 545, 1245 Class machinesThere are 6 different sizes to choose from depending on the welt size. Please select from following available sizes.1/8", 5/32", 3/16", 1/4", 5/16", 3/8"Please select your size from the scroll down options menu.