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Today we are going to show you part number 2989AT from Master Lock. This is Master Locks
universal, heavy-duty coupler lock for all types of different couplers. You can use this
on a gooseneck, a fifth wheel, and lunette- ring trailers. This unit is made of laminated
steel-frame construction and withstands the elements with an ultrasonic-welded, plastic
housing and PVC cover. So that keeps the lock itself, actually, clean from the elements.
This does come with a limited lifetime warranty. We will go ahead and show you how it works
on a variety of different types of couplers and lunette rings.
All right, this is the part that actually clamps against the coupler or lunette ring
and that actually holds everything in place. And this is an adapter right here. And this
adapter comes out. And you use this on the king pin, so the king pin would actually fit
inside of here and then would clamp down and will not go anywhere. But for anything else,
like a gooseneck coupler or a lunette ring, this comes out. And you just pop it to one
side and it comes right out. And again, it is the same operation just wrap it around
the ring or the gooseneck coupler, clamp it down into place as tight as it can go, and
then lock
it with the key in front here.