... 16,40/16,40/16S,40/20,52/26 DingRun High Quality Self-drilling Anchor Bolt R51N1)Business Type: Manufacture and sale2 ... profiles. They are widely adept in auto, hydraulic machinery, gas spring system, shock absorbers, precision instruments, anchoring machinery and construction machinery ... welcome domestic and overseas customers for Win-Win businesses. DingRun High Quality Self-drilling Anchor Bolt R51N