The Astera folding utility razor knife was designed by Hiro of Seki, Japan, who outsourced production to China. Recently discovered in the original distributor's warehouse in Seki, this utility knife comes sealed in the original packaging. With sleek designs and ergonomic feel, the blade opens and closes with one hand and the thumb stud is on both sides, allowing ambidextrous use. The blade is held in with a screw coming in from the top, allowing for easy blade removal and installation. It measures 3.5" long closed. The handle is aluminum with a grippy checkered finish and it also has a pocket clip for convenient carry. It comes with a nylon sheath, five extra blades and a special tool allowing you to customize the pivot screw tension to your liking.