IM PRIME PCNL SEMI RIGID INSTRUMENT IS AUTOCLAVABLE AND IT IS AVAILABLE IN 6FR, 9FR DIAMETER AND LENGTH IS 360MM APPROX. IT IS AVAILABLE IN 3 TYPES OF INSTRUMENTS (ALLIGATOR, PEANUT GRASPING,FLAT FENESTRATED AND TRI-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.