Which snap pliers do you have? Parts for one model are *not* compatible with the other. If you have the K1 pliers, you must use K1 parts--the same goes for K2. Not all parts are available for both models.
Note about Metal Shanks & Rubber Heads: for K1 Model:
The metal shanks (ie. bolt, rod) come in 2 sizes, one with a smaller tip and the other with a larger tip. You will need a "small" rubber head to fit the metal shank with the smaller tip, and a "large" rubber head to fit the shank with the larger tip. Most people will never use the "large" shank/rubber head.
• The small shank is approximately 3mm wide at the tip and is generally sufficient for #14 through #22, as well as heart and star, plastic snaps. We now offer 2 styles of "small" shanks. If you are replacing an existing shank that has worked well for you, we suggest you continue to use the same style.
- Photo 7a shows a newer style shank with a dome/concave tip. This is ideal for #20 and #22 snaps.
- Photo 7b shows a shank with a bullseye tip. This is ideal for #16 and #14 snaps, although it is very commonly used for #20 and #22 too.
• The large shank is approximately 4-5mm at the tip and is generally recommended for #22 and larger snaps. The large can also be used for #20 sockets to achieve a flatter press. Do not use with #20 studs or any part of a smaller size, as it may crush the snap.