GBC ProClick P75 Finisher Binding Unit, Letter Size, 110 Sheet Capacity, White (7708146) Improves productivity allowing users to quickly and easily bind documents Works with all colors and sizes of ProClick spines Designed for use with a ProClick binding machine or pre-punched paper and covers Includes extra built-in storage for ProClick spines and a unique built-in editing tool Compact, contemporary design is easy to use