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Unified nail jacket is a set of nail cover used for helping driving in nails.
It is made of rubber hoses with 30 °, 60 °, 45 °three types. When users need to drive a row of nails in certern angle,for example,hanging painting or photo,nail jacket will do great help.
Jun XU, Yingqing LU, Xuanchong LI, Qing LIU