Ktech Suction Cup Window Mount for TomTom ONE v3 / Third Edition / 3rd Edition / Explore UK (SKU 6641) Great quality, reliable suction for TomTom ONE v3 & v2. Slide on TomTom Holder, adjustable for prefect viewing. Arm measures approx 7cm with a 55mm suction cup. Use on windows, windscreen, friction mounts or dash discs. Ideal as replacement or for use in a second vehicle.