Wichard's Watertight U-Bolt represents a significant advancement in U-bolt technology with its water-tight, UV-resistant, rubber collar. Alas! Vibration, noise, and leaking have been eliminated, not to mention the need for silicone sealers! WC65321 is made of forged stainless steel with an eye stock of 1/4 in. (5mm), and it has a safe working load of 1,411 pounds (640kg) and has a breaking load of 4,409 pounds (2000kg). It is 2 23/64 in. (60mm) long and has an eye width of 1 7/64 in. (28mm) and an eye height of 1 3/16 in. (30mm) .