1,JSW-505H4 features its head material as ultra-clean foam 2,low particle generation 3,solvent resistance,soft and nonabrasive Features *Polyurethane foam head over rigid paddle *Long, light green polypropylene handle *Thermally Sealed head*Soft and nonabrasiveBenefits *Low particle and fiber generation*No contaminating adhesives*Good chemical resistance Foam Tip Swab JSW-505H4