Master Lock 3784DAT Heavy Duty Trailer Coupler Lock
Protect your trailer from tow away theft with this coupler lock set from Master Lock. This heavy duty trailer coupler lock fits 2-5/16 inch standard lip, rolled lip, straight lip, surge brake, hammer blow and UFP coupler styles. Laminated steel construction protects against physical attacks while an advanced locking mechanism resists picking and prying. A stainless steel coupler latch lock is keyed alike with the coupler lock for added security and convenience. The latch lock adjusts from 9/16 inch to 2-3/4 inch for application versatility. A keyway cover protects both lock cylinders from moisture and dirt.