For all applications, only very applicable synchronous belt wheel, can realize the normal application, and this applies as long as it is reflected in the size of the pulley. In particular, is the need to everyone at the time of buying pulleys, in terms of its size focus on the following two questions: size problem a: pulley on various aspects of size fit his own application. The size of the synchronous belt wheel after including the overall diameter, thickness and so on several aspects. For you, will be different because the actual application, for the many dimensions of pulley has different requirements. So I need you at the time of purchase pulley, focus on the size of its various aspects are appropriate their own application. Size problem two: the size of the pulley is accurate. Whether from the quality of the synchronous belt wheel, or from the point of whether it has a good applicability, structure size is need its has a high precision to will be better. So everyone at the time of purchase pulley, requires in terms of its size, focus on whether the size precision. Focus on the top of the synchronous belt wheel this two size problem, we buy belt wheel can very appropriate own applications, so pulleys will be more has the ability to realize optimization application.