SOG Specialty Knives & Tools Camp & Hike Ultra XR XHP Folding Blackout SOG12630557. 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.