Specification Brand : uxcell BulletPoint1 : Material: Alloy, mainly made of copper, iron, nickel, chromium, tin (Lead-free). BulletPoint2 : Total Length: 68 mm / 2.68 inch; Shank Diameter: 4mm; Fit for Power: 40W. BulletPoint3 : Heat quickly, good ability to hang tin, not easily oxidized. BulletPoint4 : Lead-free soldering iron tips can bear higher temperature than those normal tips.Perfectly compatible with soldering tips on lead-free. BulletPoint5 : Tips: Please pay attention to the outer diameter to avoid mismatching. ExternallyAssignedProductIdentifier1 : 1220000615533 ExternallyAssignedProductIdentifier2 : 01220000615533 ItemDisplayWeight : 1 pounds ItemName : uxcell 4mm x 68mm Lead-free Soldering Iron Tip Replacement Solder Conical Tip 40W Black 3pcs ItemPackageDimensions_Height : 14.5 centimeters ItemPackageDimensions_Length : 2.7 centimeters ItemPackageDimensions_Width : 9.7 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : soldering-iron-tips Manufacturer : uxcell Material : Alloy ModelNumber : STTC-101 NumberOfItems : 1 PartNumber : a19123000ux0334 ProductDescription : Specifications: Tip Shape: Conical-Round Tip Heating Style: Outer HeatingMaterial: Alloy, mainly made of copper, iron, nickel, chromium, tin (Lead-free) Tip Length: 12mm Shank Diameter: 4mmTotal Length: 68mm Fit for Power: 40W Features: Lead-free soldering iron tips can bear higher temperature than those normal tips. Perfectly compatible with soldering tips on lead-free. Heat quickly, good ability to hang tin, not easily oxidized. Wires-free soldering iron tips are better for the environment. Tips: Please pay attention to the outer diameter to avoid mismatching.