The "1X" paradigm has hit the mountain bike world en masse, causing plenty out there to rethink the idea of hefting around a bulky front derailler, front shifter and extra chainring (or two). Enter Wolf Tooth Components, a manufacturer specializing in retrofitting existing 10 speed drivetrains to be 1x10 compatible, thanks to their dedicated front "Drop-Stop" chainring and a super huge chainring added to the rear cassette.
We think these bolts and nuts are the best on the market. Other short bolts/nuts designed for single rings use a slotted nut that is likely to strip-out the first time you use it. Ours use a large hex socket on both the bolt (5 mm) and the nut (6 mm). Bolts are 6 mm long and have the length laser engraved on the head. Simply better.
These work great with Wolf Tooth or any other brand single chainrings.