Feature:1. 3 Sets in All: Comes with 3 sets of 3D Printer silicone sock, aluminium heater block and stainless steel throat.2. Perfect Match: For Ender 3, for Ender 3 Pro, for Ender 5, for Ender 5 Pro , for CR10, for CR10S, for S4, for S5.3. Quick Cooling: Promoting the heat dissipation, these 3D printer accessories guarantee stable working performance.4. Reliable Work: Allows for higher safety and better effects in high temperature printing, very efficient as well.5. Easy to Install: Designed to have a light weight and a compact size, the installation can be quickly completed.Specification:Item Type: 3D Printer PartAluminium Heater Block: Material: AluminiumNet Weight: Approx. 6 g / 0.21 ozFixing Screw Inner Hole: M3, M6Heating Tube Inner Hole: Approx. 6mm / 0.24inThermocouple Inner Hole: Approx. 3mm / 0.12inApplication: For 3D printer extruder, for CR10, for CR10S, for CR10 S5, for Ender 3, for Ender 3 Pro, for Ender 5, for Ender 5 Pro, for CR10S Pro V2, etc. Silicone Sock: Material: Flame retardant insulating silicone. Features: Use flame retardant materials with good insulation to keep the heating block and nozzle clean. .Package List:3 x Aluminium Heater Block3 x Stainless Steel Throat3 x Silicone SockNote:3 sets includes 3pcs aluminium heater block, 3pcs stainless steel throat and 3pcs silicone sock.