-75% Bondtech Extruders Extruder Body Rebuild Set for MK2.5/3 Upgrade €5.00 €20.00 This Bondtech Extruder Body Rebuild Set is only for customers who previously bought a Bondtech MK2/MK2S or MK2.5/MK3 Upgrade Kit and have a Prusa i3 upgraded to MK2.5S or MK3S. Add to cart