Contains 10pcs brass nozzles, with M6 thread, all sizes are 0.4mm for use with 1.75mm filament. The hardened steel nozzle can be used for printing PEI or fiberglass filament at high temperature. Contains 10 flexible nozzle cleaning needles - 5 0.4mm needles + 5 0.4mm needles 35mm, can help you clean your nozzle. Contains 3pcs stainless steel heat breaks used for hotend Contains a set of 3D printer tools for easy installation, cleaning and maintenance of nozzles and removal of printed parts easier. Material: metal Color: As shown Package Contents: 2 x PC4-01 Pneumatic Connector for Hotend 2 x PC4-M6 Pneumatic Connectors for Extruder 3 Heat Break Tubes 10 x E3D Brass Nozzle 1.75 / 0.4mm 1 x Wrench 3 x Heating Blocks 3 x Silicone Socks which can also be used for CR10 Heating Blocks 1 x Wrench 2mm (2 x 16 x 50) 5 x 0.4mm Cleaning Needle Silver Color 5 x AST0.35mm Gold Color 1 x 1 Meter PTFE Tube 2 x 4mm 1 x PT.ESD-15 Tweezers 1 x PT.ESD-12 Tweezers 1 x Stainless Steel Spade No. 17 (handle is plastic) 1 x Stainless Steel Spade No. 4 (handle is plastic) 1 x L-shaped Wrench Only the above package content, other products are not included. Note: photography and different displays may cause the color of the item in the picture to be slightly different from the real color. The allowed measurement error is +/- 1-3 cm.