4KS represents the consistent development of our tried and tested curve system. 4KS is even more robust, stronger and more secure. Its new design stabilises the key, making it more compact and ergonomic. Thanks to the new drilling protection 4KS complies with the strictest security category as per EN-1303:2015. Which features have remained? 4KS remains the reliable system suitable for the toughest conditions.
4KS. More robust. Stronger. More secure. Security for the toughest conditions