Detailed Description  Strong intensity,small applying ectension,oil resistant,durable,precise size.  Suitable for the stepless driving such as printing machinery,electrician machinery,rubber machinery,spinning machinery,light industrial machinery,carpenter machinery and foodstuff machinery.  We can produce a variety of models under ISO standard,American standard,GB standard or other standard available.When ordering,the clients only give us the width,height,interal girth and wedge angle or samples.