WHEELS MANUFACTURING SPACERS FOR 30MMSpacers are needed for various things. Sometimes a part needs to be adjusted or there's too much side-play. The Wheels Manufacturing Spacers For 30mm is used to adjust the crank chainline or take up the extra slack when using 30mm spindle cranks in BB30, PF30, BB86, or BB92 bottom brackets. It has a 30mm inner diameter and comes with 10 per bag. Features Adjusts the crank chainline or take up any slack30mm inner diameter is perfect for BB30 cranks Comes with 10 per bag just in case you need extra spacers | Wheel Master | Manufacturing Spacers For 30Mm . 5Mm Spacers For 30Mm Pack/10