[soared]

Until you use a cheap tool on your expensive bike, the allowance on the tool is poor and strips a screw, which can only be custom ordered direct from the manufacturer with a 2 month lead time, leaving your half-fixed bike completely useless.

This happened to me when bleeding my hydraulic brakes - the screw was a 2.5mm Allen and my keys were slightly smaller than 2.5 from being rounded over a short period of time. That rounded the screw, and my choice was to leave my brakes without fluid.. or drill out the screw!

[marcus0x62]

Allen fasteners are bad, and the people who designed them should feel bad. Even relatively high quality allen wrenches are prone to stripping fasteners. The best option on the market is the MAC RBRT series[1]

1 - https://www.mactools.com/products/sbdb77rbrt

[fn-mote]

For the not-so-curious: $180

[johnwalkr]

I keep a handful of left-handed drill bits on hand for drilling out screws. You can get them cheaply from mcmaster. They work much better than "Easy-outs" and similar tools, and 90% of the time the fastener backs out well before you reach the point where you have to hope you're not damaging anything but the screw.