2 straps per set. Our 5.5 meter long 25 mm wide polyester straps are UV treated and use strong, long-lasting, 25mm wide Nylon buckles. These do not scratch your car's duco like metal straps, and do not corroded with salt. For those bigger tie-down jobs. Often able to use only one strap per craft depending on your crafts length and your roof rack's layout. Usually suitable for up to 4 or more boards depending on your board's width and the thickness of your roof racks. Suitable for SUP's, Malibu's and most ski's, kayaks and canoes. Available in a variety of colours.