USA customer worm screw jack limit switch. USA customer use these worm screw jacks for lifting system. Every lifting system includes five standard JTC25 screw jacks, one JTC25 screw jack with two travel stroke limit switches. Custom made rectangle top plate screw end. Custom made the lift screw end with bolt-on steel plate. Custom made protective tube with a groove, the two limit switches are mounted on the protective tube, it is flexible to control the travel length with your need. Features: 1.screw jack limit switch 2.USA worm screw jack 3.jacks lifting system 4.JTC25 screw jacks 5.rectangle top plate 6.protective tube groove