This E3D Silicone Sock is a perfect way to keep your HotEnd clean and neat. This will fit the E3D V6 HotEnd or other V6 Style Hotends that are based on the E3D V6 HotEnd. The sock clips right onto the HotEnd with no disassembly needed and prevent failed prints from sticking to the heater block or melting over the thermistor wires. Failed prints can lead to major extrusion problems, sometimes full replacements of HotEnds. These Silicone socks help prevent these issues by adding a layer of protection over the HotEnd which makes it easier for the filament to fall off the heater block. They can also help insulate the HotEnd a bit which helps keep the heat in. This can speed up warm up times and help keep a consistent heat while printing. Three (3) Socks are included in this purchase. The outer dimensions of each individual sock is 25mm x 18.5mm x 14mm (.99in x .73in x .54in). Please note on MK3 Hotends you may need to cut off a bit of the sock depending on how tight your wiring is. The sock fits on perfectly as-is if the wiring is not too tight to begin with. If your wiring is tight then snipping off a bit of the sock carefully should allow you to just remove what is needed to let it fit, but not remove too much so the sock cannot hold on any longer.