130mm chain ring adapter for larger chain rings 38t to 55t.
When you want to go for something different than the stock chainring.
Suitable for BBS02 & BBS01 Bafang mid drive conversion kits. Not suitable for the BBSHD.
Also included are 5 x (M5 x 16 stainless steel screws).
Adapter is 2mm thick, on some bikes can only attach chain ring and not suitable for attaching both the chain ring and chain ring cover.