Bulldog A-Frame Collar-Lok Trailer Coupler, Fits 2-5/16 in. Ball, 12,500 Capacity, 2846320 ZBY4F_HT861

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See more details at Tractor Supply Co. .723 7 starOverpriced trailer tongue.December 4 It's a decent unit not great. The unlocking control wire is flimsy and as it flares out, the bottom ears spread out. You need to pull them inward towards the trailer frame before you go to far with the welding required to install. I feel as the unit is overpriced for the quality. Roadrunner341 tractorsupply.com