Premium Materials--MK8 nozzles are made of high quality brass material.Heavy duty and provide a long service life.Easy to install and change. Applicability and Compatibility--MK8 extruder nozzles fit for 3D Printer -10, MK8 Reprap Prusa I3, compatible with all 1.75mm PLA ABS 3D printer. Precise Design--MK8 Nozzle through long-term testing to solve the problem of plugging and missing materials to the greatest extent, low thermal conductivity, resistant to , high abrasion resistance. Parameter--Input diameter 1.75mm; output diameter 0.4mm ; Screw thread: M6;Hexagon diameter: 6mm Features: The nozzle has strong compatibility. The inner wall of the MK8 nozzle is smooth and free of burrs, with a low viscosity coefficient, and is comfortable and safe to use. Colour: gold Material: metal Package Contents: 20 x 0.4mm MK8 brass nozzle 1 x Anti-static tweezers (about 12.5cm in length) 1 x wrench 10 x 0.4mm nozzle cleaning needle (with storage cylinder (the cylinder cover is in the picture color)) 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.