CNC Tool Holder Clamping Forks are designed to hold CNC tool holders on an automatic tool changer. These forks are molded with extremely rigid plastic with metal inserts for durability. The forks are commonly used on Biesse, Multicam, Northwood, Onsrud, CNC Factory, Laguna and many other CNC Machines. The maximum recommended weight is 16lbs. There are two options, HSK 63 F Holder Fork and ISO 30 Holder Fork.