Fasteners 1)Material:Un-finite 2)Size:Un-finite 3)Finishing: ... ,recessed head13Drive typesSlot, Phillips, Phillips tamper-resistant, Square,Square recess14webistewww.tf-screw.comScrew head styles:We are china factory,we have ... :3. Factory Show: We have 11 years of making the fasteners,and have more prefessional technical staff for design and quality ...