Shattering Strike

Epic Weapon Focus (EL) (unarmed strike) , Concentration 25 ranks, ki strike +3,

When using an unarmed strike to attempt to break an object with sudden force (rather than by dealing normal damage), make a Concentration check rather than a Strength check. The break DC remains the same. Using Shattering Strike is a full-round action that incurs attacks of opportunity. You can't use Shattering Strike to escape bonds (unless you are so bound as to allow you to make an unarmed strike against your bindings, such as when you are bound by a length of chain).

When using an unarmed strike to attempt to break an object with sudden force (rather than by dealing normal damage), make a Concentration check rather than a Strength check. The break DC remains the same. Using Shattering Strike is a full-round action that incurs attacks of opportunity. You can’t use Shattering Strike to escape bonds (unless you are so bound as to allow you to make an unarmed strike against your bindings, such as when you are bound by a length of chain).

You can shatter objects with your unarmed strike.