MASTER LOCK® COUPLER LOCKS Attach easily to virtually every trailer coupler on the market to prevent trailer theft.

Made of forged steel for increased strength; 16,000# Capacity

Made of forged steel for increased strength; 30,000# Gross trailer weight

Made of forged steel for increased strength; 20,000# Gross trailer weight

Integrated key lock provides towing security and theft prevention with NO need for a pin or hitch lock.

Made of forged steel for increased strength; 7" Shank; 10,000# Gross trailer weight

2", Locking Ball Mount, 2" Drop, 3/4" Rise, Class lll/IV, 1 Tool Torque Tool Torque Pewter Powder Coat Ball Mount Has A 1" Shank Hole, Includes A Built In Receiver Lock That ...

Ball & Mount Pre-Pack - Class III 4" drop Contains Ball Mount, 2" Hitch Ball, and 5"8" pin and clip Pre-assembled Ball Mount with Standard Hitch Ball, packed with hitch pin a...

Drop & rise information on ball mount face Black powder finish Class II-Max trailer wt. 3,500 lbs. Class II-Max tongue wt. 350 lbs. Class III-Max trailer wt. 5,000 lbs.

Chrome Hitch Ball; 2",3/4" dia. shank, 2-1/2" shank length; Load Rating 3500lbs; Class II; Pack of 6 in Retail Box

Made of forged steel for increased strength; 16,000# capacity

Made of forged steel for increased strength; 16,000# capacity

Made of forged steel for increased strength; 60,000# Gross Trailer Weight

Chrome Hitch Ball; 2-5/16", 1" dia. shank, 2-1/2" shank length; Load Rating 6000lbs; Class III; Pack of 6 in Retail Box

Chrome Hitch Ball; 1-7/8",3/4" dia. shank, 2-1/2" shank length; Load Rating. 6000lbs; Class III; Pack of 6 in Retail Box