The one you have may be adjustable, look on the very end and see if you have a small screw half sticking out , the stripes are for different shift points due to different reared ratios,those are non adjustable  , (engine loading =high or low manifold vacuum)  if you use the wrong one you may end up with a early or late up shift , they have a calibrated spring inside , stiff spring late shift , soft spring early shift