This tip cleaner eliminates the temperature variation associated with the wet sponge approach and does a better job. The curly brass insert does not need to be kept wet and cleans without damaging the tip. Uniform iron temperature ensures consistent joint quality and reduces cycle times. It"s made from a heavy-duty heat-resistant rubber base that won"t slip around on the bench, is static-safe and is also suitable for lead-free solders. Supplied with spare insert.