The Rebar™ Micro Catheter is a single lumen catheter. It is designed to be introduced over a steerable guidewire into the vasculature. The accessories can be attached at the proximal end of the catheter by means of a standard luer adapter. It has a semi-rigid proximal shaft which changes into a flexible distal shaft to facilitate the advancement of the catheter in the anatomy. Fluoroscopic visualization is facilitated by single or dual radiopaque markers at the distal end. The outer surface is coated to increase lubricity. The micro catheter is reinforced in stainless steel and is optimized to deliver embolization materials or diagnostic materials contrast. It provides appropriate images with the feature or benefit.