IM PRIME PCNL METAL DILATOR SET INSTRUMENT IS REUSABLE AND AUTOCLAVABLE AND IT IS AVAILABLE IN DIFFERENT DIAMETER. IT IS USEFUL IN DILATING DURING PCNL PROCEDURE, IT COMES WITH GUIDE ROD AND ALKINE AND ALSO WITH AN ERGGONOMIC DESIGN WHICH MAKES MORE HELPFUL TO SURGEON, IT EASY FOR THE SURGEON TO HOLD THE INSTRUMENT PROPERLY IN HIS HAND.