The floor spring is a hydraulic door closing device, but the device that presses the spring is worm gear rather than gear, rack.
Top quality of floor spring on the show,AusToolGrind Expo.
The floor spring is a hydraulic door closing device, but the device that presses the spring is worm gear rather than gear, rack.
Top quality of floor spring on the show,AusToolGrind Expo.
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