Different foot holder or shank lenghts

What about shank lengths?

Most modern machines have a low short shank length - this is approximately 12mm (1/2inch) from the thumb screw down to the needle plate.

Some older machines and/or selected new models have a long shank length - this is approximately 18mm (3/4inch) from the thumb screw down to the needle plate.

Singer machines use low shank snap-on however low screw on feet will also fit or the slant shank type feet.
Pfaff machine have their own special clip on feet in an very extensive range.
Bernina have a particular fitting on their models. These feet will only fit Bemina machines.
Most other machines like Brother, Elna and Janome will fit the low shank type feet.

We carry a huge range of sewing machine presser feet for all the popular brands, you can find the correct foot for your machine by using... brand, type and model number online search tool in our sewing machine parts section.

Remember that substituting a specialist screw-on foot in place of a clip-on one is often possible.