Provides for easy, accurat, non-traunatic over-the-guidewire cather placement. It features a 21 GA introducer needle with locking trocar, platinum-tipped .018' Nitinol guidewire, coaxial 4F-6F dilator introducer set with locking ring and platinum RO marker, and .038" (or .035") guidewire with floppy tip and "j" tip.