A, stainless steel 1/4-20 7.5 female turn M8-1.25 7 revolution screw, used to adapt 1/4-20 screw to M8-1.25 screw or M8-1.25 screw to 1/4-20 screw hole;. a, stainless steel 1/4-20 7.5 revolution M8-1.25 7 female adapter screws, used to adapt 1/4-20 screw hole to M8-1.25 screw hole or M8-1.25 screw to 1/4-20 screw;.
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