EMKA offers a comprehensive product range of ingenious locking technology from a single source. The modular program structure allows a unique variety of components: quarter turns, locking-systems, handles, hinges and gasketings. The high quality and product standards are guaranteed by an excellent manufacturing know-how and by the certified process control according to ISO 9001. The 1A-140 series is a wing knob that has a housing zinc die. The round cylinder zinc die comes with a stainless steel screw, earthnut, or nut and cap. These accessories are zinc-plated. Each of the round cylinders has a silver steel key with a polyamide grip that is colored GF black.