The joint is tight and the contact surface is smooth and flat to solve the problem of material leakage of consumables. Cutting chamfering, reducing resistance, reducing chamfering resistance, and cutting more smoothly. Overall hardening treatment, high temperature resistance, corrosion resistance, smoother wire output. The nozzle is processed by high-quality thermoforming, using high temperature carburizing and hardening treatment, which has super wear resistance and heat resistance, and has two characteristics of high hardness and high toughness, and has a long service life. Compatible with most high-temperature printing consumables on the market. Product name: MK8 hardened steel nozzle Nozzle consumables: 1.75mm Nozzle diameter: 0.2mm Nozzle hardness: overall hardness 50 degrees (surface hardness 55-60 degrees) Processing hardness: overall hardening treatment Colour:black Material:hardened steel Package Contents: 5 x Nozzle Only the above package content, 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 +/- 1-3cm.