For E-bike speed sensor adapter.

MATERIAL : Stainless washer with N45 SH magnet
SPEC :
           ADP-SHE8-1S : C-C 32mm with 1mm magnet
           ADP-SHE8-2S : C-C 32mm with 2mm magnet
           ADP-SHE8-3S : C-C 40mm with 2mm magnet
           ADP-SHE8-W56S : C-C 56mm with 2mm magnet
           ADP-SHE8-W60S : C-C 60mm with 2mm magnet