Tool comes with Snap Dies, and # 1 Grommet Dies
Snap dies are standard size for Boats and Tonnau Covers,
The size is Ligne 24 for the snaps which is 5/8" measurment on cap
Comes with 2 dies for the Cap and Socket
and 2 dies for the Eyelet and Stud
Also comes with # 1 Grommet Dies
These tools are handy because they are portable and you can take them out to the Boat or Vehicle without having to remove the cover you are working on completly and taking it inside to the table. You can work on a boat right on the water, Boat and Upholstery Shops Keep these tools on hand.