Description Both gears are made of steel, which prevents rust and allows them to function for a long time. The hardened steel etruder gear assembly is an internal component of the hardened steel etruder unit. It consists of a driven gear and a drive gear that work together to feed filament into the hotend. The etruder gear assembly is built with heavyduty materials and is designed for longterm performance. However, if wear or clogging occurs due to prolonged use, the etruder gear assembly can be easily replaced. Thanks to its hardened steel gears, the etruder unit can print with tough technical filaments such as carbon fiber nylon and fiberglass nylon. The P1P stainless steel etruder can be upgraded to a hardened steel etruder by simply replacing the etruder gear assembly. The etruder gears are made of stainless steel, if you print tough technical filaments like carbon fiber nylon and fiberglass nylon, there will be abrasion, so in this case we suggest you use this hardened steel variant. Reduction ratio 953 Supported filament diameter 1.75mm Supported filaments PETCF, PAHTCF, PA6CF, PLACF, PETGCF, PLA, PETG, ABS, ASA, PC, TPU For P1P owners Color Photo color Material Hardened steel Package contents 1 3D printer Gear assembly The above package content only, other products are not included. Note Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 13 cm.