PLENDE ABOUT COMPANY PRODUCTS SERVICES CAREER TO DOWNLOAD CONTACT Experience since 1945 We specialize in the production of mechanical and electromechanical railway traffic control devices continuously since 1945. We deliver our products to the Polish railway network and international concerns from the railway traffic management systems sector. Cable accessories Track chokes and cable glands Track electromagnets Switch drives Drive mountings Derailments, indicators and bases for signaling devices Mechanical couplings of closing closures Key locks Kolster sp. Z o. O Lubelska 3 , 10‑404 Olsztyn , Poland tel./fax +48 89 533 02 01 info@kolster.com.pl kolster.pl General terms of sale