The HONEYWELL part LSZ51C is a member of the MICRO SWITCHA„¢ Heavy-Duty Limit Switches: HDLS Series. This limit switch features a 38 mm (1.5 inches) fixed length roller lever with a A˜ 19 mm x 6.35 mm (0.75 in x 0.25 in) nylon roller. The back roller mounting of this limit switch ensures optimal performance and durability. With a heavy-duty construction, the LSZ51C is designed to withstand demanding industrial environments and is perfect for applications that require precise and reliable position sensing.