Versatile CompatibilityCompatible with 4040-PRO Y-axis extension kit/4th-axis rotary module kit/dust shoe, etc. (Please note that 4040-PRO X-axis extension kit is not compatible). Wide Spindle CompatibilityIncludes a 65mm spindle mount and 52mm spacer for easy router or laser module upgrades. To accommodate a variety of spindle motor diameters, additional mounts are available for purchase to ensure a seamless fit. |