This is a modified x-carriage for the Reprrappro Tricolour Mendel. It is 3mm wider to be compatible with the hotends from Tech3D, and of course the one from Reprappro (but it could also help in case you build your own hotend and your heatsink is a little bigger than the on from Reprappro). It has a different belt-clamping system, which uses printed clamps with GT2-belt-grooves, which are screwed onto the main part. Credits go to: -The Reprappro Team for the original design P.S.: I'm new to the whole licensing part, i hope everything is in order, please write if it is not!Print it like the standard x-carriage parts: 1 x modified x-carriage 1 x nozzle holder front 1 x nozzle holder back 2 x belt clamps You need the following additional parts: 2 x M3x12 Screw 2 x M3 Washer 2 x M3 Nut