This is a replacement top hat spacer suitable for use with Shimano cranks in the following Hambini Bottom Brackets (6805 based)
- BB30 Necked
- BB86 Necked
DOES NOT FIT BSA 30mm or BSA DUB
They are made from genuine DuPont Delrin which has the generic name Acetal.
This listing is for one top hat spacer, you will require two for both ends of a bottom bracket.