Rock Drilling T ools 16 www brunnerlay com Brunner Lay Part Number Feet MM Pounds Kilograms Drifter R ods R35 to T 38 138 Hex 16 112 4902 K8193NQ 856 388 18 112 5525 K8217NQ 960 435 Part Number Inserts Holes Inches MM Pounds Kilos Gauge Mid Face To p Side Button Bits Modifed Chisel 178 48 S1937M 17 77 5716 238 114 2725 Crown 2 51 S2037P0 20 91 638 238 21532 Drop Center 212 64 S2537D0 25 11 6716 338 31532 138 R35 Length W eight Diameter W eight Button Bits are available with Standard Parabolic Ballistic or Conical Carbide Parabolic P as the last digit Ballistic B as the last digit Conical C as the last digit