At 6.5mm thick and weighing only 34 grams, the SOG Ultra XR XHP folding knife features slimline design and lightweight high-quality materials, including a CRYO CTS XHP stainless steel blade and carbon fiber handle. Its XR Lock enables smooth ambidextrous single-handed opening and securely locks the blade open. Titanium pocket clip doubles as a money clip. A pocket knife with everyday reliability in any situation. Rarity Note: This Ultra XR is especially rare due to being a prototype that never made it to the retail market. Rarity Note: The Ultra XR in Carbon Fiber never was produced with a Rose Gold blade, which makes it especially rare to obtain.