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Quantity
1
Description
Model S251 is our most affordable 2-5/16" trailer coupler lock because it slides right over the coupler flange and the lock core is integrated into the lock body. From an "A-frame" welded-on trailer coupler, to a straight bolt-...
Reviews
4.9
17 ratings
5
4
3
2
1
New heavy duty ball lock
Very strong and durable. Built with heavy gauge steel. Fits snug. Very pleased
C
Christopher · March 9, 2026
Happy with my Model S251
I recently purchased 2 model S251 for my flatbed and box trailer. They were keyed alike, which I really appreciate. They arrived well packaged, and fit both of my couplers well. They are well made, and should provide good security for my trailers.
M
Mark · August 28, 2025
Great lock
Lock fits as described. Great price point for what you get. Feel a little safer with it on. Hope it will provide higher security similar to the more expensive models.
