DIY Height Adjustable Spindle Mount Bracket Clamp for CNC Router Spindle Motor CNC Router Mounts Model: spindle diameter 100mm/85mm/80mm/65mm This mount bracket clamp is an adjustable spindle mount for cnc routers, especially multi heads cnc router. This height adjustable spindle mount is also called tool calibration, great for multi heads cnc router processing on different thickness work piece. It is easy to adjust the spindle station by this adjust z axis spindle clamp mount to keep the cutter bits on the surface of the work piece, then do the same job. Save time to adjust spindle heads height. Also good for multiheads cnc router machine working on same thickness material, it is easy to adjust and keep all cutter bits at the same level. Adjustable DIY CNC Spindle Mount Features: Material: Stainless steel Diameter: 100mm (85mm/80mm/65mm, optional) Payment can be made by Western Union, Paypal, T/T.