Abstract: A lock for an excavation tooth assembly, the lock comprising: a body; first and second engaging portions mounted to the body and movable between respective first and second positions; wherein the engaging portions being interdependent so that movement of at least one of the first and second engaging portions causes a corresponding movement of the other of the first and second engaging portions.

Abstract: A lock for an excavation tooth assembly, the lock comprising: a body; first and second engaging portions mounted to the body and movable between respective first and second positions; wherein the engaging portions being interdependent so that movement of at least one of the first and second engaging portions causes a corresponding movement of the other of the first and second engaging portions.

Abstract: An excavation tooth lock assembly to lock a first tooth member to a second tooth member, the first tooth member having a body that incorporates a socket which is configured to receive a nose portion of the second tooth member, a locking space provided when the second tooth member is received in the first tooth member, wherein the lock assembly comprises a lock which is configured to be inserted into the locking space in an operative position to lock the first tooth member to the second tooth member, and inter-engaging elements disposed on the lock and one or both of the first and second tooth members, the elements configured to engage to releaseably retain the lock within the locking space in its operative position.