TowSmart Latch Coupler Lock is a reliable theft deterrent designed to secure your trailer with ease. Crafted from solid cast material and heat-treated for enhanced toughness, this lock superior durability and corrosion resistance, ensuring long-lasting protection. Its flat key design provides convenience and ease of use. The lock fits most trailer couplers, making it a versatile choice for various applications. Whether you choose Model 7006600 with solid cast construction or Model 7005300 made of brass and adjustable from 5/8" to 1", you can trust this lock to keep your trailer secure. Model Number: 7006600