The 91992 is designed for new or replacement use with vacuums equipped with 38mm hose. Sidewinders have been proven to increase productivity, reduce cleaning time, increase effectiveness in detailing, and reduce fatigue for the user. The pivoting neck of the Sidewinder and vertical presentation lets you move the tool through an arc around your body relying on body rotation unlike the push pull of traditional tools. This permits a single pass to clean an area three times larger than what is achieved with a traditional commercial vacuum tool. The 457mm (18”) scalloped carpet tool has an extra heavy thickness at the base to add life to the tool. The 457mm natural fill floor tool is great for any hard surface, including wood, laminate, tile, stone, vinyl, polished surfaces. The pivoting neck of the floor tool makes it ideal for cleaning horizontal surfaces, return air vents and light fixtures overhead. Unlike cam lock telescopic the 38mm 68877 aluminum telescopic extension tube length is controlled with a slide button which secures the length desired once set. Changing length is easy and can be accomplished with one hand while continuing to vacuum making it ideal for cleaning stairwells. The set is designed to be compatible with all major brands of backpack vacuums equipped with 38mm hose including Numatic, Pro Team, Truvox, PacVac, Hawk, Mosquito, Karcher, Tennant, Perfect, Bissell, Sandia, Mercury, Power Flight, and Carpet Pro.