Usage Tips:1、Headgear Accessory: Important and necessary accessory for headgear of facial cover, helps extend the service life of headgear, convenient and reliable. 2、Fitment: Perfectly fit for BMC NM4, F1B, F4, F5, N5NH5, F5A, F5AS, N5B, N5BH series, simple and practial, easy to install and remove, bring you convenience. 3、Safe To Use: Wonderful replacement for the old or broken one, keep the headgear in high performance. Reasonable structure, smooth and mellow, will not scratch skin. 4、Plastic Material: Magnetic headgear clip is made of great plastic material, eco friendly and odorless, firm and sturdy, not easy to break, durable for use. 5、Multiple Applicable Place: Light weight and in small size, easy to store and carry, an be easily put into your bag, suitable for home and health center. Item Type: Magnetic Headgear Clip Material: Plastic Fitment: Fit for BMC NM4, F1B, F4, F5, N5NH5, F5A, F5AS, N5B, N5BH series 1 x Pair of Magnetic Headgear Clip