21 Rock Drilling T ools 800 8726899 Brunner Lay T38 112 38MM Part Number Inserts Holes Inches MM Pounds Kilos Gauge Mid Face To p Side XDesign Bits 212 64 T2538X0 36 16 234 70 T2738X0 42 19 3 76 T3038X0 48 22 312 89 T3538X0 65 29 4 102 T4038X0 87 39 Button Bits Crown 212 64 S2538C0 37 17 6716 338 3516 138 338 234 70 S2738C0 43 19 6716 338 3516 138 338 3 76 S3038H0 47 21 612 312 212 1716 238 312 89 S3538H0 52 24 612 312 212 112 112 4 102 S4038H0 84 38 758 412 312 112 112 Drop Center 212 64 S2538D0 37 17 6716 338 1516 3516 234 70 S2738D0 43 19 6716 338 2516 338 3 76 S3038D0 47 21 6716 3716 1716 32364 312 89 S3538D0 52 24 612 312 2716 338 4 102 S4038D0 84 38 8916 412 238 438 Flat Face HIDuty 212 64 S2538F0 37 17 6716 438 238 234 70 S2738F0 43 19 6716 538 2716 3 76 S3038F A 47 21 8716 5716 138 238 312 89 S3538F A 52 24 812 512 2716 4 102 S4038F A 84 38 8916 612 2716 Flat Face 3 76 S3038F4 47 21 8716 638 238 312 89 S3538F4 52 24 812 6716 212 238 Retrac 212 64 S2538DW 50 23 6716 4716 214 138 234 70 S2738DW 58 26 6716 338 2516 338 3 76 S3038DW 66 30 6716 3716 29mm 338 312 89 S3538DW 1 10 50 812 4716 338 438 Drop Center 4 102 S4038DW 146 66 8916 412 1716 438 212 64 S2538FW 50 23 6716 4716 214 138 3 76 S3038FW 66 30 8716 4716 212 214 312 89 S3538FW 1 10 50 812 6716 212 238 Flat Face 4 102 S4038FW 146 66 812 712 2716 238 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 Diameter W eight