Qosina offers a variety of swabs that are in stock and ready for immediate delivery. Qosina part # 17028 is a fiber optic swab made of polyurethane foam and nylon measuring 4 inches with a 1.70 mm head. The polyurethane foam head helps prevent linting. Qosina part # 17028 comes packaged 100 pieces per bag. Qosina offers a variety of applicators and brushes to complement this swab.