The EVVA KDZ euro key & turn cylinder has a standard euro profile and is supplied complete with a connecting screw. The EVVA A5 system is a basic but robust 5-pin locking system and is available in many cylinder styles and with many optional special features. This cylinder is fitted with a 10 tooth cog wheel, designed for use with multi-point locks or specialist mortice locks that are operated via a gear ring or a toothed rack.