Swingline GBC CombBind C20 manual comb binding machine handles both punching and binding for moderate use environments. Binding machine offers a binding capacity of 330 sheets and a punch capacity of 28 sheets. Equipped with a low-force handle to simplify punching. Works with letter, oversize, and A4 documents. Has a maximum spine size of 1.5". Includes color coded document and spine size guides for precise handling. Attached tray collects waste for easy disposal.