Check the listing for details. Sidewinder X1 Silicone Insulation Socks for Sidewinder X1 Hotend Block. Color: Blue, Condition: New. Listed at 9.99 USD. Sidewinder X1 Silicone Insulation Socks for Sidewinder X1 Hotend Block These socks will keep your heater block clean and free from burnt and blackened plastic. They don’t just keep the block clean, but also keep heat inside the heater block and off your print. Made of a heat-resistant, non-stick silicone material our socks will repel build-up of molten plastic. This really helps with sticky materials like co-polyesters and filled-composite materials that like to build up on nozzles.These socks also offer a huge boost in temperature stability, particularly if you use high- airflow cooling around the nozzle to cool the print. The additional cooling combined with reduced heat radiation from the block to the print really boost the ability to print great overhangs and bridges, all while keeping the heater block temperature extremely stable. The covers simply push onto the front of the heater block with no disassembly - they will be a tight fit when first pushed on cold. When hot the silicone will expand to the correct size to fit the hotend snugly. The elastic material will fit all nozzle sizes in the range from 0.2mm to 1.20mm. Depending on what materials you print and how much abuse they get they eventually wear away, although this design has a much improved life expectancy than the first generation. Even with sticky abrasive materials and a bit of abuse they should easily last 100+ print hours. With less sticky materials like ABS and gentler use you can get almost infinite life. Your mileage may vary. Made of a heat-resistant, non-stick silicone material to repel build-up of molten plastic. Package Includes 3x Silicone Socks Payment: We accept Paypal Fast Shipping from our warehouse in Indiana! We do not drop ship from Amazon. All of our product is purchased directly from Chinese factories. Shipping: We ship to your Paypal address ,please verify your address during checkout. We do not take responsibility for item loss due to wrong address. Items are shipped out same day if order is placed before 3:00 PM Eastern Standard Time. Items ordered over the weekend will be mailed out Monday morning. Packages, unless otherwise selected, are shipped via USPS First Class Mail and generally arrive at locations in the continental United States in 2-4 business days. Lost Mail: If tracking shows your package apparently lost or not tracking. Our policy is to file a claim with the USPS, and await their response. 99% of the time this will set things back on course and get you your package delivered. For a faster USPS response, it is helpful if you take the tracking number to your local USPS and request them to investigate. If within 5 business days USPS can't find your package we will reship. About: Atlas 3D is a northern Indiana based retailer offering quick shipping nationwide form the Midwest. We are not a drop shipper, all items go through our warehouse are checked for quality and then sent to you the buyer. We specialize in 3D printer parts & CNC and nothing else to serve you better.