用于减少外置干燥箱耗材进入挤出机时的耗材阻力，特别是TPU软性耗材。

同时也避免了外置排料口与原厂外挂耗材盘的互相干涉。

Guide wheels help reduce resistance to filament entering the extruder when using an externally heated drying oven.

This is very helpful when using soft consumables such as TPU, and it also avoids interference between external consumables and the external discharge port.

M3X8 cup-shaped self-tapping screw*1
M3X16 flat head self-tapping screw*1

M5X16-20 metric screw*1
M5 nut*1

In addition, use the metal tray bracket screws in the original accessories to fix it.