Works like a linchpin where the retainer clip "snaps" up to remove it, and down to lock it into place.
This new design eliminates the need for a separate clip to keep the L-pin in place.The new snap L-pin is the latest and greatest innovation for your hitch. 95019430 Snap L-Pin 2-Pack Make using your Equal-i-zer hitch even easier by combining this with a set of socket pins with thumb clips. The new design also holds the L-pin slightly above the top of the Equal-i-zer spring arm, which helps reduce hitch noise, especially in slow, tight turns.