Price is price per 1 rol. P15 monofilament thread can be used with the portable sewing machines such as: Smitsen NP-7A, Smitsen NP-8A, Smitsen NP320 and the Smitsen SM2200. When you use this thread make sure you also cover thread with a net for the best result and the unintended entanglement of the thread when sewing in different positions. The thread can be used for a variety of machines such as Union Special 2200, Newlong Np-7A. etc.