ITEM NAME:10pcs 6cm*6cm Soldering Iron Solder Tip Welding Cleaning Blue Sponge Pads Tool Z a.imagelink a:hover.imagelink {color:#db3606;.10Pcs/set Solder Iron Tip Cleaning Sponge Pads. Type : Iron Sponge. Material: PVA Sponge. Use for: Remove solder residue, maintain PCB components clean.