Features: Engineered for H2D printers, this 300°C heat resistant silicone sock ensures stable thermal insulation to prevent print failures while protecting heating blocks and nozzles from filament residues. Crafted with premium silicone, this flexible yet durability thermal insulation sleeve maintains consistent chamber temperatures and shield critical components like extruders and hotends during high intensity printing operations. Ideal for printing enthusiasts, professional makers, and users seeking enhanced equipment longevity and consistent performances in resin or high temperature filament projects. Perfect for prolonged printing with ABS, PETG, or engineering grade materials where temperature fluctuations could compromise model quality or cause nozzle clogs. Its snug yet removable design simplifies maintenance without sacrificing structural integrity, ensuring uninterrupted printing workflows for intricate prototypes and functional part. Specifications: Component: Silicone, Withstand temperatures up to 300°C. Length:Approx. 31mm/1.22inch Accurately fit for H2D hot end design to ensures perfect coverage and protections. Package Includes: Package A 1pc Silicone Sleeve Package B 2pc Silicone Sleeve Package C 6pc Silicone Sleeve Package D 10pc Silicone Sleeve note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.