Widely applied for connecting extruders, fittings. Compatibility: Compatible with all 1.75mm ABS 3D printer, works with Anet A8. Installation: connecting by the outer thread of the quick fitting. Disassemble: press and hold the blue or black end of the quick fitting and pull out the tube. Attention: small 3D printer accessories, keep from children. tube Outside Diameter: 4mm Inside Diameter: 2mm Density: 2.15-2.20g/cm3 Heat resistance: up to 260 Celsius Length: 1.5m PC4-M6 Fittings Inner diameter(blue end): 4mm Thread: M6/3mm It supports turn 360 freely, easy to disassemble. PC4-M10 Fittings Inner diameter(black end): 4mm Thread: M10/6mm colour:blue Material:plastic Package Contents: 3 * 1.5M tube (2.0mm ID/4.0mm OD) 3 * PC4-M6 fittings 3 * PC4-M10 fittings Only the above package content, other products are not included. Note: Light 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.