Optical Screw Wheel Kits China Eyewear Screw Co., Ltd. Base Info Model NO.:CES006Material:Carbon SteelType:Hexagon HeadHead Style:RoundConnection:Common BoltGrade:4.8Trademark:China Eyewear ScrewOrigin:China Description Pre:Spiral Wrapping Band Fast Spiral Wrapping Band With Tool Next:Optical Screw (CES011)