This Leofoto carabiner is designed for photographers and videographers who need to add extra stability to their tripod or camera setup. The integrated 1/4"-20 weight hook allows you to hang additional weight-such as a camera bag or sandbag-to help reduce vibration and improve balance. A 3/8"-16 mounting stud is available as an optional variant (sold separately), allowing compatibility with tripods, monopods, and other camera support systems that use a standard 3/8" thread. Please select the desired option when purchasing. Weight: 10g / 0.35 oz