Ok this is a clone of a BMG dual drive extruder. I have bought several different clones and this one is no different from other clones in terms of quality and cheap price
Befenybay 2020 Upgrade: X-Axis Synchronous Belt Tensioner For Creality Ender-3/Ender3 Pro/Ender3 V2/CR-10/CR-10 V2/CR-10 V3/CR-20 Pro βStraighten And Stretch For Enhanced Performance
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