An excavating tooth has an adapter, a point and a locking device. The adapter has a forwardly protruding nose, a channel and a body. The body of the adapter is configured to be secured to excavating equipment. The point has a rearwardly opening socket for receiving the adapter nose therein, a forward digging member, and an ear extending from a side wall of the point, the ear having a recess. The locking device has a rigid body and a depressible protrusion. The rigid body is configured for receipt in the channel of the point and the depressible protrusion is configured for receipt in the recess of the adapter. The protrusion resiliently engages the recess for tightening the point to the adapter. The nose of the adapter has a plurality of tongues and the socket of the point has a plurality of grooves for receiving the plurality of tongues.