Description: This 3D printer nozzle and cleaning kit is a long-lasting kit for several purposes; Remove excess plastic and clear jams with high precision, also good for general maintenance of the heat sink section MK8 nozzles are made of high quality stainless steel and brass material.Heavy duty and provide a long service life. Easy to install and change. Parameter--Input diameter 1.75mm; output diameter 0.4mm ; Screw thread: M6;Hexagon diameter: 6mm 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 corrosion, high abrasion resistance Applicability and Compatibility--MK8 extruder nozzles fit for CR-10, Ender 2, Ender 3 Etc. The nozzle cleaning are very and robust, easy to bend the needle into the nozzle and will not break. Perfect to handle tough extruder hot end nozzle clogs. Specification: Silver Cleaning Needle Length 7cm/2.8 inch PT.ESD-15 Tweezer length 12.5cm/4.9 inch MK8 brass nozzle 0.4mm: 0.7cm x 1.3cm L-shaped external hexagon wrench: 10 x 1.08 x 1.8cm/3.9 x 0.4 x 0.7 inch Accessory Storage Box: 178 x 38 x 20mm/7.0 x 1.5 x 0.8 inch Hexagon diameter: 6 mm Screw thread: M6 Package Includes: 14Pcs MK8 Brass Nozzle 0.4mm 10Pcs 0.35mm nozzle cleaning needle 1Pcs Blue Storage Tube 6Pcs MK8 stainless steel Nozzle 0.4mm 1Pcs PT.ESD-15 Tweezer 1Pcs L-shaped external hexagon wrench 1Pcs Accessory Storage Box