... Rebar,Hand tool,automatic tying tool,automatic tier,automatic tying machine,hand-held automatic rebar tying machine,hand-held automatic rebar tying tool,hand- ... , road, bridge, etc., ironworkers tie rebar by hand with pliers and tie wire. This work requires repeated, fast ... . The literature combining stooped, squatting or kneeling postures with load handling shows rapid and severe spinal damage. There ...