TheKershaw Moonsault 5050 is a modern butterfly knife that is the little brother of the Lucha model, featuring a perfectly balanced 14C28N steel blade, dual KVT ball bearings and a strikingly finished stainless steel handle. Kershaw Moonsault 5050 - a modern butterfly knife with KVT bearings. The 117 mm long blade is made of Swedish 14C28N stainless steel hardened to 58-60 HRC. Due to the high purity of the alloy, 14C28N steel is distinguished by its high hardness, resistance to corrosion and, importantly for the user, long retention of working sharpness. The slim spear-point profile blade has a matte finish by stonewashed (bath in abrasive stones), which effectively masks any scratches or abrasions of the blade incurred during use. Thanks to the concave grind and a cutting edge with a distinctly rounded belly, the knife has excellent cutting properties, and the blade does not wedge in the material. The thickness of the blade at its widest point is 4 mm, making this striking "butterfly" also a full-fledged knife for everyday tasks. The blade expands in the middle part, thus increasing its weight and providing better balance during rotation. Despite its considerable size (260 mm overall length) and full steel construction, the knife weighs only 173 g, so its daily carrying is not cumbersome. The exceptional smoothness and dynamics of the Kershaw Moonsault 5050 is due to the seating of the arm pins on double KVT ball bearings. This makes it very easy and fast to perform tricks and extremely comfortable to use the knife on a daily basis. The Kershaw Lucha 5050 has contoured arms made of sandblasted stainless steel. The gentle contours and polished edges make playing with this knife a pleasure. The locking bolt has a rounded head and a pin to prevent contact with the blade.