Diamond Core Drill Bits

14 x 450mm , 16 x 450mm , 18 x 450mm , 20 x 450mm , 25 x 450mm , 28 x 450mm , 30 x 450mm , 32 x 450mm , 35 x 450mm , 38 x 450mm , 41 x 450mm , 42 x 450mm , 45 x 450mm , 50 x 450mm , 51 x 450mm , 52 x 450mm , 56 x 450mm , 61 x 450mm , 65 x 450mm , 70 x 450mm , 71 x 450mm , 76 x 450mm , 81 x 450mm , 82 x 450mm , 89 x 450mm , 91 x 450mm , 92 x 450mm , 102 x 450mm , 107 x 450 mm , 115 x 450mm , 120 x 450mm , 127 x 450mm , 132 x 450mm , 140 x 450mm , 162 x 450mm