We R Memory Keepers Cinch Bindery Tool binds books with a simple press of the handle. Punch perfect round holes in up to 20 sheets of copy paper at once, any length. Features: 1) Punch and Cinching Lever with rubber cushioned handle and smooth pressing motion. 2) Sliding Measurements Guide centers holes in inches and centimeters up to 13". 3) Alignment Peg ensures evenly spaced holes. 4) Customize Hole Punching Knobs allow holes to be punched in any configuration; just pull knobs to prevent holes from being punched. 5) Cinching Bar holds the binding in place and compresses to the desired diameter. 6) Wire Binding Hooks thread the binding on punched sheets. 7) Waste Bin empties easily to prevent clogs. 8) Instructions and Charts printed on the base of the tool. 9) Handle Clip holds the handle down for storage and travel