The Boker Plus Piko is perfect for all those users for whom the compact Nano is still too big. Perhaps the smallest Boker Plus pocket knife of all time was designed significantly smaller and lighter with an overall length of just 9 cm. The design by David Curtiss shows once again that size and functionality do not necessarily correlate. The convex blade of 440C is opened with a flipper and secured with a stainless steel frame lock. No clip.