Check the listing for details. Fox Knives: Knife Jupiter TIBR Radius Lock Pocket - Design Simonutti. Condition: New, Made in Italy. Listed at 590.50 USD. The Jupiter sharpener represents the culmination of the evolution of the system face even more demanding jobs than his illustrious predecessors. The design recalls the salient features of the two previous models, succeeding to integrate the round element that houses the mechanics even better. The blade, dedicated to maximum practicality, makes the Jupiter the ideal companion, while the cutting edge has a gentle and constant curvature, fully usable and easy to resharpen. The handle shines with ergonomics, characterized by a large recess for the index finger and generous space for the other fingers, Passionate about mountaineering and photography, he has worked in the world of cutlery since 2010. He is known to be the inventor of the system – Radius lock. Combining his design skill.