The T-Lock model is a dedicated coupler, "built in” into the beam of the bucket to not overly modify the kinematic system. It's available in mechanic and hydraulic version. It's reversible for coupling front/back of the bucket. It's available in three size for excavators from 1.2 to 16 t. observing specific dimensions of bucket adapter. The hydraulic version is equipped with a cylinder H that moves the closing lever G which couples onto pin P2. At the same time, safety hook S locks pin P1 automatically, ensuring total locking. T-LOCK = COMPLETE SAFETY a) cylinder H is equipped with a block valve to prevent the release of the equipment b) safety hook S to avoid the fall of the equipment in case of breakdown c) two safety springs M push on lever G should there be an hydraulic fault.