The ABUS E60 Euro profile half cylinders are suitable for switch gear & garage doors They have precision mushroom pin and paracentric keyway which offer comprehensive anti-pick protection also they have a hardened steel anti-drill spring & pin protection with 8 anti-drill pins in every keyway For emergency and convenience feature the outside key can operate the lock with internal key in place How to measure a Euro Profile Cylinder Distance from one end of cylinder to centre of cam