1. Accord with the international standard specification. The P.C.D. of the fitting holes is 44mm, 6 holes, metricthread, M5 x pitch 0.8mm.
   
2. Diameters of disks:  160mm(115g), 180mm(146g) a thickness of 2.0mm around.
   
3. The width for pads to clip is 14mm.

It's improted from Japan stainless steel to make, it is difficult to be out of shape and  able to bear the high temperature. Wavy style and lightweight design make your bike light and more handy.