Fastcap 80557 STAPLESETTER 1/4-Inch Staple Setter Punch 1/16-Inch Depth, 2-Pack The new Fastcap Staple Set solves the long time problem of misfired 1/4-Inch staples. Recess crown staples perfectly at 1/16-Inch below the surface, with just the tap of a hammer, like your nail gun was supposed to, with no struggle.