Compatible with 1.75mm flexible filament, such as nylon, TPU, TPE, etc<br />Fastening spring device allows you to fine-tune the pressure applied to the consumables by the dual drive gear<br />Unique dual feed gear can minimize slippage and increase feeding power<br />Compatible with Creality CR-10 Series, Ender-3 Series, Two Trees Sapphire, Bluer 3D printers ">