These Union (ex Chubb) 3G110 mortice deadlocks are force resistant and designed for use on timber doors up to 50mm thick. Non-handed, these detainer locks are made of hardened steel and pierced to accept bolt through fixing furniture. Non British standard however if you require a British standard lock to this spec please see part number LX5S These anti-pick, anti-drill and anti-saw locks come supplied with two keys, a keep and escutcheons. Available with and without a double pole micro switch.