100pcs/pack. Fiber Optic Lint-free Foam Clean Swabs are ideally suited for cleaning contaminations from all 2.5mm fiber adapters and connectors. The 2.5mm diameter tip is made of polyester and polyurethane and handle material is polypropylene of high quality . Therefore, in spite of low price and easy operation, fiber optic lint-free foam clean swabs have excellent performance in cleaning.