This is a great replacement for the easily worn and torn kapton tape and heat resistant cotton that come with most 3D printers. This Silicone Case is much more durable and functional when compared to typical stock soloutions for hotend insulation. This hotend Case will greatly help to stabalize the temperature of the hotend regardless of the surrounding environment temperatures. Case can be used to quickly heat the hotend to a desired temperature as the structure of the silicone inside the case prevents heat from escaping quickly. With this Case you can safely print more exotic materials such as PETG at higher temperatures while also using the cooling fans at full speed. Actively keeping the hotend very hot and cooling the PETG much quicker before it is laid onto the hotbed can help with success rates on more prints. Colour: Black Material: silicone rubber The newest trend in 3D printing, hotend Case, help to keep hotend temperatures from fluctuating and therefore improving print quality. We have developed a high-temperature silicone Case designed to work well with all printers. Use this Case to help manage hotend temperature while cooling fans operate at high speeds cooling filaments that require a much higher extrusion temperature. This hotend Case will improve success rates on prints with these types of exotic filaments as well as reduce effects of heat radiation from the hotend onto smaller models which might be more sensitive to such heat fluctuations. Package Content: 3* 3D Printer Case Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.