Fierce – Adjustable 608 SpacerWheel cores are injected by machines and might have some production tolerances concerning the width which could cause freespin problems. The wheel will not spin well if they are slightly too wide and your spacers are not long enough. This light weight adjustable spacer will always fit your wheel perfectly and boost your performance offering the perfect freespin at any time. Adjustable Spacer Set (8EA) Spacer which you can regulate with a rotation Turn to the Left Size Up, Turn to the Light Size Down Colour – Red Easy adjustment Adjustment is made easy is, thanks to a set of tools that are included Weight is kept low, with the use of aluminium Fierce – Spacer / Bolt Adhesive can be used to ensure the spacer remains at the correct width adjustment – sold separately. Or you can use “loctite / threadlocker” from your local hardware store.