The KF50KB provides quick and efficient crimping of coil bound documents from 6mm to 50 mm. This machine features a Rotary Carriage design, which means no tools required from 6mm to 50mm. Easy quick die change in 60 seconds or less, which equals to very little down time when switching coil sizes. Makes any operator experienced at crimping coil. Unit comes attached to the KB-50 Krimp Box. (Item# KF50KB)