LS75M31B11 is a 50 mm wide, reinforced Limit Switch made of zinc alloy material (Zamak), with 4 mounting holes at the top, 3 1/2'' NPT cable entries on the bottom and sides, plastic roller lever (Ø12,5 mm) on steel plunger actuator for horizontal movement and 1 N.O + 1 N.C snap action (Zb type) contacts