Tight joint and smooth, flat contact surface solve the problem of material leakage. Chamfered cut reduces resistance, making cutting smoother. Overall hardening treatment provides high temperature resistance, corrosion resistance, and smoother extrusion. The nozzle is processed through high-quality thermoforming, with high-temperature carburization and hardening treatment, offering super wear resistance and heat resistance, as well as high hardness and toughness for a long service life. Compatible with most high-temperature printing consumables on the market. Product: MK8 hardened steel nozzle Nozzle consumables: 1.75mm Nozzle diameter: 0.4mm Nozzle hardness: overall hardness 50 degrees (surface hardness 55-60 degrees) Processing hardness: overall hardening treatment Color: black Material: Hardened steel Package contents: 2 x nozzle Only the above package content, other products are not included. Note: Light reflection and different screens may cause the color of the item in the picture to be slightly different from the real one. The allowed measurement error is +/- 1-3 cm.