Inspired by the appearance of a pen hooked in a chest pocket, this is a very lightweight, portable tool equipped with a hexagon wrench that tightens and loosens 4mm and 5mm bolts, and hooks easily to a shirt pocket, belt loop or the loop of your bag.

Although small, the IZA 45 can also apply enough torque to tighten all components fastened by 4mm and 5mm bolts.