The Crank Brothers Multi Tool is a tough aluminum and steel multi tool. It has 19 tools including allen keys, torx, screw drivers, and most importantly a chain tool.
The chain tool has a a knurled grip which is essentially when dealing with a greasy chain. But that knurled grip hides size 0-4 spoke keys and an 8/10 wrench.
I don’t know why you would carry a multi tool without a chain tool. Cause a broken chain far from the car can mean a long walk home! Not that I’ve taken that walk…
Another nice feature is an included 8mm allen key. Which works for your pedals and chain ring bolts.
The side of the tool has a knurled grip worked in to it to prevent slipping.
And the Crank Brothers M19 includes a little aluminum sleeve to carry it in.
If you are looking for a multi tool for your bike this one has a ton of features and is made really well.
Crank Bros says on their website: http://www.crankbrothers.com/tools_multi19.php
weight : 175g w/o tool flask
length: 3.5″ / 89mm
frame: 6061-T6 aluminum
tools: 6150 high tensile steel
chain tool: 8/9/10 speed compatible
spoke wrench : #1, 2, 3, 4
hex wrenches: #2, 2.5, 3, 4, 5, 6, 8
screwdrivers: 2-phillips, 1-flat
open wrench: 8mm, 10mm
torx: t-25, t10
carrying case: stainless and polymer
warranty: lifetime
msrp: $33 / €30