Features adjustable pivoting wheel guide, which secures front wheel within chock. Three adjustable heights depending on diameter of wheel. Suitable for wheels with tyre widths 90-130mm & diameters 17"-21" (430-535mm). Base can be permanently bolted to the floor (fixings included), & features a detachable upper assembly that can be easily stored & re-attached when required, stabilising motorcycles without the need for side or centre stands. Base features lashing strap gap for securing the bike in transport.