The all-new 2016 Stumpjumper FSR - Here now!
The new 2016 Trek Stache 29+ hardtail - Go big!
A hexagonally shaped tool for turning the ubiquitous recessed bolts found on bicycles. There are L-shaped Allen wrenches, ones with screwdriver handles and ones with ball-ends so that you can turn bolts in tight spaces. Get a set for your toolbox and on-the-road/trail kit that includes at least 3, 4, 5, 6 and 8mm wrenches, and you'll be prepared to fix most things.