IM PRIME URS SEMI RIGID INSTRUMENT IS AUTOCLAVABLE AND NON ROTATABLE AND IT IS AVAILABLE IN 3FR, 4FR OR 5FR. DIAMETER AND LENGTH IS 610MM APPROX. IT HAS 3 TYPES OF INSTRUMENTS (ALLIGATOR, TRI-PRONG AND BI-PRONG) IT COMES WITH AN ERGGONOMIC DESIGN WHICH MAKES MORE HELPFUL TO SURGEON, IT EASY FOR THE SURGEON TO HOLD THE INSTRUMENT PROPERLY IN HIS HAND.