PART #1410-0018 is used when adapting a narrow-glide fender to a 41mm wide-glide front fork; measures 1.125 thick, 2.75 on-center blind holes and 2.6 on-center mounting holes
PART #1410-0019 is used to adapt a Deuce front fender to a Wide Glide fork; measures .875 thick, 2.6 on-center horizontal holes and 2.75 on-center vertical holes