The simple design of the snap attaching tools leaves the "guesswork" behind. The three-part tool literally "snaps" fasteners into place with the aide of a household hammer. Includes the size 16 adapter; additional adapters allow customers to accommodate a larger snap top. The curvature of the adapters cradle the snap head to prevent crushing or cracking. The post on the tool snaps out enabling you to set a snap anywhere on the garment.

Attaching Snaps using the SnapSetter Tool from The Snap Source, Inc. How to use the Size 16 SnapSetter Tool with the Size 20 (1/2"/13mm) Tool Adapter