The CLASSIC NM™ PTCA Dilatation Catheter is designed to allow easy exchange of the catheter using a standard length guide wire. The proximal shaft is composed of a polymer coated stainless steel tube. The steel construction allows superior proximal pushability with a smooth transition to a distal shaft specifically designed to be trackable through tortuous vasculature. The semi-compliant nylon balloon material allows high pressure dilatation while maintaining control of balloon size, and the balloon's Duraloob™ hydrophilic coating enhances crossability through complex lesions. Two radiopaque platinum marker bands are located within the balloon. The internal lumen of the catheter accepts a standard 0.014 inch PTCA guide wire. The guide wire enters the catheter distal to the hypo tube and advances coaxially out the catheter's tip, thereby allowing both coaxial guidance and rapid exchange of catheters with a single standard length guide wire. Printed markers located on the proximal shaft indicate catheter position relative to the tip of either a brachial or femoral guiding catheter. The design of this dilatation catheter does not incorporate a lumen for distal dye injections and distal pressure measurements.