100% brand new and high quality Material:Nichrome wire Power:30/40/60W Voltage: 220V/ 50Hz Applicable models: domestic same size external heating electric iron Quantity:1/2/5pcs(as your choose) Feature: The heating element of the iron core is the best alternative to the old core, ensuring the efficiency and long life of the iron. Not easy to corrode, not easy to oxidize Fast fever Size: 30W: Outer diameter:8.9mm.Inner Diameter:4.2mm,Length 160mm,Heating body length: 53mm, sleeve length 55mm, lead length 50mm 40W: Outer diameter:9.8mm.Inner Diameter:5.2mm,Length 180mm,Heating body length: 58mm, sleeve length 75mm, lead length 50mm 60W: Outer diameter:10.8mm.Inner Diameter:6.2mm,Length 195mm,Heating body length: 65mm, sleeve length 80mm, lead length 50mm Package Include: 1pc or 2pcs or 5pcs Electric Soldering Iron Core (as your choose) Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!