Trimedyne compatible holmium laser fibers have been in short supply of late. That shortage over and, better yet, IQ's new ProFlex LLF var. Trimedyne is higher performance that any Trimedyne fiber you've ever used. You'll forget fretting about your old fibers...you'll forget where they came from...because you'll never want to use any other fiber, ever again. ProFlex LLF200 var. Trimedyne fibers are actually 200um core. If you want '272', use our 273 but you'll be pleasantly surprised if you try our 200; it delivers more power than others' 272 fibers and, being a REAL 200 micron fiber, it permits FULL DEFLECTION of your flexible ureteroscope for accessing the pole. Delivering more power is just the beginning. ProFlex also offers Smooth Passage tips that don't hang-up within the working channel. See ProFlexFibers.com for more information or call 844-PROFlex. Caution: Federal (USA) law restricts this device to sale by, or on the order of, a physician.