FIG. 1 is a side elevational view of the snap hook, the opposite side being a mirror image thereof; FIG. 2 is a right end view thereof; FIG. 3 is a left end view thereof; FIG. 4 is a top plan view thereof; FIG. 5 is a bottom view thereof; FIG. 6 is a side elevational view of the snap hook with its locking lever in an open position; and, FIG. 7 is a side elevational view of the snap hook with its gate keeper and locking lever in an open position.