Comes with everything you need to replace snaps, eyelets and studs. Kit includes button barrels, sockets, barrel eyelets, barrel studs and heavy duty canvas snap pliers. Kit Includes: (1) Canvas Snap Pliers, (18) Caps (15mm), (18) Sockets (13.6mm), (18) Barrel Studs (14mm), and (18) Posts (13mm).