... in hardrock mines, coal mines, tunnels etc for roof supports. Cable Bolt are widely used in hardrock mines, coal mines, tunnels ... etc for roof supports. We have cable bolts with hook or without hook. Different specifications: Tight-Lok ... 152 , Tight-Lok 178, Tight-Lok189, Tight-Lok 218. Length:4m, 6m, 6.3m, 6.5m, 8m, 10m Dome Plate ...