Cleanmo's CM-FS740 Cleanroom Swab is made of foam and PP Handle. Micro cleaning and disk drives, Effectively clean small, hard to reach areas with solvents such as IPA ;excess materials For general purpose cleaning Gun Cleaning, Long handle to clean hard to reach place cleaning rosin off printed circuit boards (PCBs) to apply glue and paint on small craft projects cleaning tiny places without leaving cotton fuzz behind in handgun