2.Structural
        BD Tubing Elevators are available with two types: single-latch and double-latch. Single-latch type one is equipped one latch assembly in the upper bore, while double-latch type one is equipped two latch assemblies both in the upper and lower bores. The body and ring-latch-lock are mainly to handle tubing.
        Ring-latch-lock is fixed in eccentric notch of the body. With handle and M12 flat-ended screw, the state of ring-latch-lock can be range within 110° angle. Compressed spring is fixed in handle, when the handle is pull outwards approximately 8mm, the ring-latch-lock can be rotated, and when the ring-latch-lock is located "open" or "close", the handle can be fit in the position-fix hole.