This Maypole MP5491 Caravan Leg Lock is designed to immobilise your caravan by locking the corner steady in the down position. It is suitable for all corner steadies fitted with an exposed 19mm hexagonal drive. The leg lock features a high security locking system, robust steel construction, and is water and corrosion proof. It is electro-plated for rust protection and has a dual locking system. The lock is insurance approved and independently tested. It comes supplied with a 3mm allen key and hexagonal driver.