Description:After the sponge is soaked, the volume and thickness increase that the dense cleaning holes can quickly clean the oxide on the surface of the soldering iron tip.The soldering sponge can prevent the soldering iron tip from oxidizing, overheating and burning out, and it can remove solder residues and keep the PCB components clean, which makes it very versatile.Made of synthetic sponge, this product is very practical to use.The length of rectangular sponge is 3.5cm and the width is 5cm. The diameter of the round sponge is 5cm. And the length of the square sponge is 6cm and the width is 6cm.It is suitable for electric soldering iron, welding, soldering iron tip and so on.Item Name: Welding SpongeMaterial: Synthetic SpongeApplication: Remove the oxide residue on the surface of the soldering iron tipProduct Thickness: 6mm (After Soaking)Size Details: Size:Rectangular Sponge: 3.5cm x 5cm/1.4" x 2" (Approx.)Round Sponge: 5cm/2" (Approx.)Square Sponge: 6cm x 6cm/2.4" x 2.4" (Approx.)Notes:The quantity is about 100pcs, due to manual calculation, the quantity might has 1-5pcs more or less, hope you can understand, thank you.Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:100 x Sponge