These Slide Fittings are used as part of a Bimini top system to install a new Bimini top to boat rails or for adding additional support arms to an existing top. Jaw Slides attach an eye end securely to support tubing. Square jaws fit 1 x 1 tubing commonly found on pontoon boats. Round jaws fit standard 7/8 or 3/4 tubing. Set screw on back allows you to quickly and easily adjust the placement of these slides where they are needed. Hinged Jaw Slides fit 7/8 tubing and are ideal for mounting on handrails, or in applications where it is not possible or convenient to slide the fitting onto the tubing. Constructed of UV resistant injection molded nylon. Available in black or white. *Stainless tube wall thickness 0.049″.