the clearance is really tight for my 17" derbi spoked wheel. like there's no leeway for the arm to travel so its KINDA hard to setup a brake line. (if you're using non-derbi equip)
its about 5mm thicker than the stock derbi brake pads. (i think based on treats measurements)
edit: my cable and lever were crap and with a derbi cable and controls it's awesome.