The FEP (fluorinated ethylene propylene) IV catheter is a radiopaque catheter with three embedded X-ray contrast lines. The catheter with transparent ultra-thin wall to optimise flow rate Shape of catheter tip allows atraumatic introduction and prevents mechanical vein irritation. Easy introduction due to the rigidity of the catheter. Luer lock connector. Colour coding for easy identification of dimension. Can be safely left in the vein for up to 72 hours. Flexible wings with holes enable easy fixation to animal skin.