Galaxy 500 Comb Binder Features Satellite System - a removable binding platform which allows simultaneous punching and binding of documents price showneet punch capacity, price showneet binding capacity with a maximum comb size of 50mm Full width handle reduces punching effort Punch selection for A4 & A5 sized documents Back margin adjustment selector for thicker documents Front access full size storage tray with patented comb & document measure for quick selection of the correct size supplies Includes starter kit for binding 20 documents Bind doc are easy to read and photocopy, can add or remove pages in the binding , it is the most popular and economical binding Comes with Satellite System a removable binding platform allows one person to punch while another binds the document.