Karl Storz 26154BI Bettocchi Inner Sheath, size 5.4mm, with channel for semirigid 5fr., operating instruments, with 1 stopcock and 1 luer-lock adaptor.
Karl Storz 26154BO Bettocchi Outer Sheath, size 6mm, with 1 stopcock and 1 luer-lock adaptor

For use Telescope 4mm, 30°