Original microswitches with roller lever B611-1B from manufacturer Tesla. If necessary, the roller lever is easily detachable (it is attached to the microswich only with two screws). These switches were for example used in horizontal boring mills from company TOS Varnsdorf (made in Czechoslovakia). Microswitch has 3 screw terminals. Approximate dimensions: 32,3 x 32,2 x 13,4mm. Weight: around 16g. Other informations are available in the attached PDF document. New old stock switches, directly from the old reserves.