ABC-A Air Box Closer for A7/8 or A3/4 StaplesA pneumatic corrugated box closer that uses "A" type 1 3 8" crown x 7 8" leg stick staples for securely sealing filled boxes with a pilfer proof staple. Tool is of all metal construction, and can be easily converted to use alternative A 3 4" leg staples. For medium to high volume effortless closing of all sizes of cartons, requires a minimum of 80 psi air. Includes: machine oil, staple remover, extra Allen wrenches. Uses Markwell A7 8 Carton Closing