[M6 Thread Nozzle]MK8 extruder nozzles are made of upgraded brass, we provide 4x0.4mm /1x0.6mm /1x0.8mm MK8 nozzles , those 3 nozzle set are suitable for 3 Pro / and all M6 thread connections. using the nozzle ,which is better to use the nozzle cleaning kits to clean the inner wall of the nozzles. [ Wrench 6 in 1]Using this 3d printer nozzel change replacement tools, you can easily to remove the different sizes and types of nozzles , various heater blocks ,PC4-M6 M10 connectors and the other right 3D printer parts. The wrenches is just enough for remove the nozzle and some samll parts use . [5PCS Nozzle Cleaning Needles and 10PCS Nozzle Cleaner PCB Drill Bits ]If the nozzle is blocked, those 3d print nozzle cleaning tool kit can help to clean it easily,make to heat the nozzle to 200,and then turning the drill bit or needle slightly clockwise,'t insert it directly, it will cause the drill bit and 0.4 mm cleaning needle to break ! [Hotend Cleaning Copper Brush ]The brass bristle is specially designed for hotend cleaning, since it is a copper toothbrush, to turn off the power when cleaning the hot end. [ Cleaning Set] We to make a nozzle kit ,which not only have different nozzles but also can clean and remove and protect the nozzles , .So we have 0.4mm/0.6mm/0.8mm sizes nozzles , nozzle cleaning needles ,copper , PCB drill bits , silicone cover , wrench , tweezers. MK8 3D Printer Nozzles Compatibility for 3/ 3 pro// 5 series/ CR10 Series/MK8 /Prusa i3 met MK3 extruder/Reprap printer/ 3D printer Note: Due to different production batches, the color of the tweezers is random, 't accept the specified color Colour:Photo Color Material:plastic Package Contents: 10 x drill bits 5 x 0.4mm nozzle cleaning needles 1 x curved tweezer 1 x straight tweezer 1 x 6 in 1 change replacement wrench 1 x hotend cleaning brush 1 x nozzle silicone sock 6 x MK8 extruder nozzles(All sizes in one small bag , the size is engraved on the nozzle ,choose right size using) 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.