Features The MK10 nozzle and maintenance kit includes 25 brass nozzles with sizes: 0.2mm, 0.4mm, 0.6mm, 0.8mm, and 1.0mm (5pcs for each size). A 21mm opening stamping wrench is required for easy nozzle replacement. Comes with nozzles of five diameters (0.2mm, 0.3mm, 0.4mm, 0.6mm, 0.8mm) for effortless maintenance. Includes a transparent plastic box for convenient storage of accessories. Stainless steel needles and copper wire handles ensure durability; they are wound by an automatic machine for reliable performance. Compatible with popular 3D printer models like FlashForge, Dremel Idea Builder, Wanhao, Monoprice, and many more. Specifications MK10 Brass Nozzle Material: Brass Thread: M7 Inner Diameter: 4mm Size: 10 x 9 x 13 mm Nozzle Sizes: 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1.0mm Needles Material: Stainless Steel Diameter: 0.2mm, 0.3mm, 0.4mm, 0.6mm, 0.8mm Opening 21mm Wrench Color: Silver Material: Rebar Package Details Size: 12.8 x 6.8 x 2.0 cm / 5.0 x 2.7 x 0.8 inches Weight: 186g / 6.6oz Package List 5 x 0.2mm Nozzles 5 x 0.4mm Nozzles 5 x 0.6mm Nozzles 5 x 0.8mm Nozzles 5 x 1.0mm Nozzles 2 x 0.2mm Diameter Needles 2 x 0.3mm Diameter Needles 2 x 0.4mm Diameter Needles 2 x 0.6mm Diameter Needles 2 x 0.8mm Diameter Needles 1 x Opening 21mm Wrench 1 x Storage Box