Yh R32s Self Drilling Rock Bolt Wuxi Yihong Metal Products Co., Ltd Base Info Model NO.：R32SMaterial：High Strength SteelType：Round HeadConnection：Common BoltHead Style：RoundStandard：DIN, GBApplication：EnvironmentalFinish：Hot Galvanizing Description Pre：Stainless Steel Air Coupling Hose Fittings Next：Blace Concrete Nails
