Usage Tips:Features: 1.Quick Release: The u bolt lock and spring loaded lever allow you to latch and release the part immediately, perfect for trailers, RVs. 2.Adjustable Clamp: The adjustable design ensures that you can accurately modify the mounting distance and required clamping force. 3.Practical Design: Versatile and time saving clamps are designed to hold and ensure your jigs and fixtures are in place, practical and reliable. 4.Exquisite Craftsmanship: Both clamps features a color coded red, and also has a non slip hand grip, professional performance brings you reliable use experience. 5.High Performance: Cold rolled steel clamping body surface coated with non damaging zinc plating, high strength alloy steel for long durability. Specification: Item Type: U Bolt Toggle Clamps Material: Alloy steel Load Capacity: 2000lbs Style 40341 (Self Lock) Application: Used for trailer, RV