Vicma Extensible Stabiliser 350A-A500Awith Pocket For Carrying Changeestabiciclos bike VIcMAAdjustable universal: 14A-16 -18A-20A(350AA500Amm)For bikes with changeWheel 120AmmFeatures of Vicma Extensible Stabiliser 350A-A500Awith Pocket For Carrying Change Stabilisers to learn to ride a bicycle safely These wheels are directly attached to the axle..