“77-Series”

PACLOCK’s “77-Series” high security trailer coupler locks are the best choice for securing your application. Our patent-pending two-piece system improves on an expired patent by integrating the stainless-steel cone puck, creating a more secure, user-friendly, and affordable solution. Why is PACLOCK doing this? We know our competitors have been overcharging for years, and now we’ve designed and manufactured a superior product that our family business is comfortable selling at an affordable price. No gimmicks, no games – just great products at the right price. Every “77-Series” lock comes with 304 grade stainless steel patented cone-shaped puck, while the competition charges $100 extra for an “upgrade” to a lesser quality 303 grade stainless-steel. In addition, our competition can’t provide the cone-shaped puck. The patent-pending two-piece design of the “77-Series” ensures seamless installation with consistent alignment, unlike products with a loose puck. Its patented cone shape resists frontal drilling attacks, making it a customer favorite for years. While 304 stainless is more expensive and difficult to machine, it offers superior corrosion resistance compared to the 303 or 302 used by competitors. The 1/4″ steel shield is double protected with zinc plating and powder coating for maximum resistance against the elements, corrosion, and tampering. The “77-Series” also secures chains to further prevent trailer theft. PACLOCK’s “77-Series” is the best product out there.