Countersunk Head Design: the Screw Head Is Countersunk, Which Can Be Flush with the Surface of the Workpiece to Ensure a Flat and Beautiful Appearance. ● Shape:countersunk Bolts Screw. Hexagonal Design: the Head of the Screw Has a Hexagonal Hole, Which Is Easy to Use Hexagonal Wrenches for Installation and Removal, Avoiding the Screws from Slipping Teeth.
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