Master Lock 377KA-0313 Trailer Coupler Lock

The Master Lock 377KA features a trailer coupler lock, designed to fit 1-7/8" (48mm), 2" (51mm) and most 2-5/16" (59mm) trailer couplers. The advanced locking mechanism provides resistance to picking and prying. Easy to install and remove. Resists rust and corrosion. Keyed Alike.

• Fits 1-7/8" (48mm), 2" (51mm) and most 2-5/16" (59mm) trailer couplers
• Advance locking mechanism resists picking and prying
• Easy to install and remove
• Resists rust and corrosion
• Keyed Alike.

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