Self-Drilling Rock Anchor Systems: Hot-dip Galvanize and Plain Self Drilling Hollow Bar (R25N , R32N, R32S, R38N, R51L, R51N,T76N,T76S,30/11,30/14,30/16,40/16,40/20,52/26) Tungsten Carbide and Steel Cross, Button Bits (R25 x 42 mm, R32 x 51 mm , R38 x 76mm , R51 x 110mm etc.) Anomalistic Cast Bits ( R32 x 75mm , R38 x 110mm etc.) Three Aerofoil Cast Bits ( R38 x 110mm ,R51 x 110mm etc.) Tungsten Carbide and Steel Arched Cast Bits (R32 x 51 mm , R38 x 75mm , R51 x 110mm etc.) Coupling Sleeves (R25 & R32 & R38 & R51 etc. ) Nuts (R25 & R32 & R38 & R51 etc. ) Fibreglass Rock Anchor Bolt: Solid - DIA: 16mm,17mm,18mm,19mm,20mm,22mm,25mm,32mm,40mm Hollow - DIA: 25mm/12 , 32mm/16