Features: Good insulation performances and temperature resistance effectively protect the heating block and the clean insulation around the nozzles to prevent burn. Improve the efficiency of your 3D Printers with this good quality silicone sleeve, providing good heat insulation for consistent printing result For easy installation and removal, this silicone sleeve is suitable for Neptune 4Plus printers, ensuring a smooth printing experience. The hotend silicone sleeve enhances the durability and performances of your Printers. Whether you're working on intricate prototypes or large scale projects, this silicone sleeve offer reliable insulation, minimizing heat loss for precise printings. Specifications: Material:Silicone Size:approx 11.8x16x22.5mm/0.46x0.63x0.89in Quantity: 1PCS/5PCS For: For Neptune 4Plus Note: Due to the problems of lighting effects and shooting angles, there is certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1PC/5PCS Silicone Cover