1、Easy to Remove and Install: This PTFE tubing features minimal friction, reducing friction for a more accurate printer. No complicated installation or modifications to the printer itself are required. PTFE tubing is easy to remove or quick to install and is not a hassle to use. 2、PTFE Tube Colors: Red, white, black and blue each are 1m long with a 2mm inner diameter and 4mm outer diameter. Eight PC4‑M6 brass fittings and eight PC4‑M10 stainless steel fittings with tube cutters. Robust and durable. 3、Tube Cutter: Ensures that PTFE tubes are cut flat on both sides to prevent any failure or thermal creep during feed and retraction. 4、High Temperature Resistance: Extremely accurate inner diameter, high temperature resistant, using nice PTFE. our tubing kits will work at higher temperatures, up to 280°C operating temperature. 5、Great Compatibility: Suitable for 3D printer 1.75 mm filament and other devices, if you have related needs, then this one is for you.