Features: The position of the gear and the accuracy of all screw holes are calibrated. Double extrusion wheels.The high quality feeding gear can minimize slippage and increase feeding force. The BMG extruder is used for various materials of nylon and soft TPU-TPE. The extruder is designed for 1.75mm consumable sturdy spring device, allowing users to fine tune the pressure applied to the consumables by the feeding dual drive wheels The reduction gear device can also give the extruder greater torque- while reducing the burden on the motor and extending its lifespan-. Transparent material can better observe whether the equipment is properly worked . Specifications: Filament- diameter:1.75mm Color: Transparent Size: as the Pictures Type: BMG Reduction Extruder Package Includes: 1PC x BMG Reduction Extruder note: Due to the different monitor- and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 0.3-0.5cm measuring deviation- due to manual measurement.