DIMENSIONS: 9 x 9 x 3 . BUILT TO LAST: The REESE Towpower Universal Coupler lock is a premium lock constructed with an aluminum body and heavy-duty steel lock bar. Distance between lock shackle holes center to center is 4-1 inch. UNIVERSAL FIT: Ratchet design is adjustable with 11 locking positions and fits 1- , 2 , and 2-5 couplers.. DETERS THEFT: Bright, deterrent yellow color is durable, highly visible, and an essential accessory to all types of trailers.. SECURE PROTECTION: Easy-to-install lock resists picking, prying and drill outs. Guards against truck or trailer towaway theft in storage. See more product details Reese Towpower Strong Security Deters Thieves From Stealing Your Equipment Built To Last with a Universal Fit This premium lock is constructed with an aluminum body and heavy-duty steel lock bar. Adjustable ratchet design has 11 locking positions and fits 1- , 2 , and 2-5/16 couplers. Guards Against Truck or Trailer Theft Use of a bright, deterrent yellow color offers durable, highly visible protection for all types of trailers. Advanced lock resists picking, prying and drill outs, making this an essential safeguard. Technical Detail : Fit: 1- , 2 and 2-5/16 couplers Dimensions: 9 x 9 x 3 Item Weight: 2.3 Lbs. Material: Aluminum Body with heavy-duty Steel Lock Bar This REESE Towpower universal coupler lock prevents theft and keeps your trailer secure. The bright, yellow color is highly visible and deters thieves. It features a ratchet design with six locking positions for versatility, and is designed to fit 1-7/8 In., 2 In., and 2-5/16 In. couplers.