We R Memory Keepers Cinch Bindery Tool. This book binding tool allows you to punch properly and evenly spaced holes, with no measuring required. The kit includes one cinch binding tool. *Punch holes, thread sheets and more *Punch holes without measuring *Punch up to 20 sheets of copy paper at once *Bind from 0.325" up to 1.25" using double O wires or spiral binders (not included) *Hole pitch: 2: 1 *Cinch Bindery Tool measuring approximately 11-1/2" x 8" x 5"