About this item 8 in 1 tool set : the package includes 4 pieces pen screwdrivers and each screwdriver includes 8 screwdriver head kits with magnetism, including 1/ 16 inch, 5/ 64 inch, 3/ 32 inch, 1/ 8 inch, #00, #0, #1 and #2 Pen shaped design: pocket screwdriver is designed in the shape of a pen, there are 8 different screwdriver heads inside the pen and a small magnet in the bottom of it which can firmly fix the screwdriver heads Easy to carry: the lightweight and compact design make the mini screwdriver convenient and easy to be carried; This hardware tool is great for homeowners and DIYers to quickly do jobs such as electronic assemblies and repairs, home improvement projects and so on Sturdy material: each 8 in 1 screwdriver kit is made of strong aluminum, sturdy and durable, so you can use it at home, office or on the road; You can add it to your hand tools, home improvement supplies or office gadgets for assembly or repair when in need Easy-change screwdriver bits: it is very easy to change the screwdriver bits, just unscrew the top cover of the pen directly to take out the screwdriver bits that need using, and then put it into the tip of bit holder