Most wheel clamps are large and bulky, and when not in use present a storage problem if you are on the road. This unit is very effective but is compact for storage. The TTG602 has hardened steel jaws to resist cutting and a multiple position locking system. It has rubber coated arms to resist damage to wheel finishes, and an anti-pick lock which is supplied with 2 keys. Don’t lose them! The jaws of the clamp will fit tyres from 140mm to 245mm. Sometimes, you have to park in a dodgy area and just the sight of this product is generally enough to scare potential thieves away.140mm - 245mm