Stronghold Hitchlock for ALKO hitches fits a wide range of ALKO hitches including: AK130, AK160, AKS1300, AKS2004, AKS3004. Approved to Sold Secure Gold standard for caravan and trailers. VbV/SCM MP03 approved in the Netherlands. Weighing only 3Kg it is easily fitted, hitched or unhitched. Provides security for a car and caravan when they are parked coupled together e.g. motorway services (note - for safety reasons this product is not recommended for use while towing). Fitment in under 10 seconds. Lightweight and user friendly. touring or storage product. The robust yellow anti-saw steel casing covers the fixing bolts of the hitch to protect it from being stolen. Unique high security patented locking system. High security pick-free locks have thousands of possible key combinations and are supplied with 3 keys, plus a key identity tag. Water and corrosion proof. Storage bag included. Recommended security for caravan storage (at home or at storage facility). Registered design no. UK 9000 653 241 0003. Registered design no. Europe 000 653 241 0003. The box contains hitchlock cover, locking bolt body, locking bolt lock holder with three keys, security ball. Fitting instructions and warranty card.