1、Tight joints and flat contact surface solve the leakage problem of consumables. 2、These printer nozzles can reduce chamfering, resistance, cold cutting corner resistance, and discharge more smoothly. 3、After overall hardening treatment, these nozzles possess high‑temperature resistance, corrosion resistance, smooth wire feeding. 4、The appearance is clearly engraved for easy identification, which can ensure stable work. 5、Made of high-quality hardened steel, these nozzles are durable and sturdy with 50 degree hardness. Item Type: 3D Printer Nozzles Model: TT3D Material: Hardened Steel Quantity: 3pcs Filament: Approx. 1.75mm / 0.07in Hardness: 50 Degrees (Surface Hardness Is 55-60 Degrees) Purpose: 3D Printer 3 x Nozzles