Polar primary rollers. Pick which angles you want.
 
Usually used in 8.90 clutches:
12.28.22
15.28.22
 
Usually used in 7.90 clutches:
12.30.24
15.30.24
 
Usually used in 11.90 clutches:
18.28.22
20.30.20
 
ALL RAMPS COME WITH HARDWARE