This product is a MK10 Extruder Kit for 3D Printer as an important part. 100% Brand new and high quality colour: sier,gold Material: Stainless steel, brass, aluminum size: M7 Nozzle Aluminum Heating Block PTFE Throat Throat Outer diameter: approx.4mm/0.15 inch Throat Internal diameter: approx.2mm/0.07 inch Throat Length: approx.25mm/0.98 inch Aluminum Heating Block Dimensions: approx. 20*20*12mm/0.78*0.78*0.47 inch Aluminum Heating Block Screw Dimensions: approx.0.4mm Nozzle Dimensions: approx. 0.4mm Package Contents: 1* M7 Nozzle 1* Aluminum Heating Block 1* PTFE Throat Only the above package content, other products are not included. Note: Light shooting 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.