What's in the box: 4 different sized anodised aluminium shims in the size you choose

Directions for use:

Removable D3O® elbow inserts for the perfect balance of comfort and protection

The M8120 cranks are compatible with Boost frames only

Shimano SM-CRM86 XT Chainring - Direct Mount - Shimano - 55mm - Round - 34T - 12-speed - Aluminium Replace Images What's in the box: 4Direct mount and equipped with Dynamic Chain Engagement technology for best in class retention, the reinforced SM CR86 chainring is impact resistant, compatible with DEORE XT cranksets, and offered in sizes from 28T to 36T in two tooth increments. Features Dynamic Chain Engagement tried and true Dynamic Chain Engagement keeps the chain glued to the ring Ring sizes available in 28T through 36T for compatibility with all DEORE XT drivetrain and rider