MK9 Dual-Extruder Upgrade
All new Duplicator 4X printers come with this spring-loaded extruder drive block upgrade as a standard feature.
Includes (1) drive block for the right extruder and (1) drive block for the left extruder. Does not include the (2) V-Bearings Needed to complete the upgrade.
The v-bearings are meant to be sourced from your original MK8 assembly
Disclaimer - Price is for one part only. Image above may show multiple parts.