SPORT RIDGE Heavy Duty Bi-pods connect to standard swivel studs, fully adjustable legs lock in the extended position quickly. Micro adjustments are made by utilizing the tension wheels, allowing the shooter to shoot at any height. Heavy-Duty springs ensure fast and robust deployment of the legs both in the forward storage position or extended for steady, precise shooting. Features: Adjustable height legs by a tension wheel Bi-pod stud mount Strong springs for fast deployment