This economical precision swab (Part # 18044) is offered to resolve equipment cleaning needs. The 3.6 mm head is ultrasonically welded onto a polypropylene handle for adhesive-free processing. The polyurethane foam head minimizes the chance for contamination from cotton lint and is excellent for particle entrapment or solvent distribution. At 2.75-inches long, this compact swab is particularly useful in cleaning hard to reach areas such as optics or other small angled corners.