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Today, we're going to take a look at the 1 3/4" long coupler pin with the 1/4" diameter pin. Now this snapper pin will prevent your trailer's coupler from unlatching. Basically what you would do is unclip it, slide this 1/4" pin into the 1/4" diameter hole that's on your coupler and then clip it to hold it into place. That'll keep your latch from opening up. It is a spring tension design. So it… see more >
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