Wrench and tweezer: hexagonal wrench tool can be applied for fastening nozzles, and wrench is compatible with mk8 nozzle 3D printer tweezers , which are suitable for nozzle maintenance and cleaning consumables 10 x 0.4mm extruder nozzles can prevent print head from leakage effectively and prints with and glossy polish. Reduce the resistance from the corners and avoid blocking of the filament with rounded chamfer. Socket wrench are made of high-quality metal. Made of stainless steel, sturdy and durable, wear Resistance. It is more convenient and easier to replace or install the 3D Printer Extruder Nozzle. 10 x needles are designed for 0.4mm 3D printer nozzles For , -10, 2, 3, etc. The needles are also suitable for everything used as a nozzle. Material: metal Color: as showns Package Contents: 10X 0.4mm printer nozzles 10X 0.35mm nozzle cleaning needles With storage tube (Random Color Do not accept designation) 2X tweezers 2X wrench Only the above package content, other products are not included. Note: Light reflection 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.