Features: Engineered with silicone, this heat resistant sleeve for 3 ensures superior thermals insulation to prevent overheating and enhanceds printing safety during extended operations. Precisions molded seamlessly for 3 hotend components, maintaining print accuracy while featuring wear resistant silicone for long durability against high temperatures environment. For professional printing enthusiasts and maker requiring consistent performances, especially those managing multiple projects or industrial fabrication tasks. For prolonged printing, complex ABS/PLAs projects, and workshop setups where heat block protections and materials adhesion preventions. Effortlessly installs without tool to safeguards printers hotend from moltens residues buildups, ensuring cleaner prints and reduced maintenance downtimes for uninterrupted creativity. Specifications: Materials: Silicone Quantity: 2Pcs, 5Pcs, 10Pcs(optional) Package Includes: 2/5/10Pcs Hotend Block protectors Cover note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.