Intracorporeal lithotripsy has undergone several advancements over the recent years. Holmium laser lithotripsy has been a key breakthrough. Ever increasing miniaturization has led to the need for a flexible and extremely small caliber energy delivery mechanism. This is specifically true for RIRS. Retrograde Intrarenal Surgery (RIRS) throws several challenges- the instrumentation is delicate and expensive and must be handled with care. More importantly, it demands the use of a flexible mechanism for delivering energy at the tip of the scope. This is where the Holmium Laser comes in. With optical fibers that are as fine as 200microns, yet capable of conducting incredibly powerful energy to break stones or treat tumors.