The 4-in1 Pen Tool by Kikkerland is a pen which holds 4 essential tools. There is a double screwdriver head (one side slotted and the other Philips), hidden in the cap. Along the body of the pen you have a 3 inches and 7cm ruler, and a spirit level. Just twist the grooved part of the pen to reveal the black ink biro. The pen is mainly made of plastic but the clip and the screwdriver head are made of metal.This is a nice little gadget which will delight any DIY enthusiast!