Features: 100% brand new and high quality The MK8 extruder nozzles are through long-term testing to solve the problem of plugging and missing materials to the greatest extent, low thermal conductivity, resistant to corrosion, high abrasion resistance. Reinforced hardness: overall hardness 50 degrees (surface hardness 55-60 degrees) Made of superior quality steel, passed though overall hardening treatment. It is processed by high-quality thermoforming, and it is super wear-resistant and heat-resistant with high temperature carburizing and hardening. It has two characteristics of high hardness and high toughness. With a long service life and is compatible with most high-temperature printing on the market. Supplies. Package Includes: 10 PCS x Nozzles Specifications: Product Name: MK8 Nozzle Fit To Filament : 1.75mm Material: Stainless Steel Thread: M6 Thread Size: 0.2/ 0.3/ 0.4/ 0.5/ 0.6/ 0.8/ 1.0mm (Optional) Fit for: for CR10 CR-10S Ender 3 Ender 5 3D Printers note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.