The Equipt Sardine Multi-Tool is a super clever, convenient, and compact way to adjust the various bolts and nuts on your bike (and why not around the house?). 

The tool features a 3, 4, 5mm, and T25 torx (common for disc rotors), and a hidden 6mm in the handle. The thing that makes it so clever is that the ends swivel, so it goes from leverage to break a bolt loose to pencil-type driver, so you can quickly screw or unscrew with ease.

It comes in 4 beautiful colors, weighs 36g, and includes a mount so you can carry the tool off your bottle bosses. Roughly 85mm in length.