Harvey 92610 Brush A combination brush that cleans and prepares joints for solder Removes dirt and debris from connecting parts, use Harvey's Abrasive Sandcloth to polish end of tubing after cleaning away corrosion with brush Joints to be soldered must be free of any grease, grime, corrosion, hand prints or contamination in order to form a seal Ideal battery post and terminal cleaner Saves space, combines four tools into one