23 Rock Drilling T ools 800 8726899 Brunner Lay T45 134 45MM 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 Part Number Inserts Holes Inches MM Pounds Kilos Gauge Mid Center To p Side XDesign Bits 3 76 T3045X0 52 23 312 89 T3545X0 68 31 4 102 T4045X0 1 17 54 Button Bits Crown 3 76 S3045H0 51 23 612 312 212 1716 238 312 89 S3545H0 67 30 612 312 212 212 4 102 S4045H0 123 56 758 612 312 212 412 11 5 S4545H0 144 65 758 4916 3916 2916 Drop Center 3 76 S3045D0 51 23 6716 3716 1716 338 312 89 S3545D0 67 30 612 312 2716 338 4 102 S4045D0 123 56 8916 412 1716 3316 412 11 5 S4545D0 144 65 9916 3916 212 312 Flat Face HIDuty 3 76 S3045F A 51 23 8716 638 2716 2716 312 89 S3545F A 67 30 812 512 212 4 102 S4045F A 123 56 8916 612 2916 412 11 5 S4545F A 144 65 8916 6916 258 Flat Face 3 76 S3045F4 51 23 8716 638 2716 312 89 S3545F4 67 30 8716 638 2716 238 Retrac 3 76 S3045DW 66 30 6716 3716 2516 338 312 89 S3545DW 1 10 50 812 4716 138 4716 4 102 S4045DW 146 66 8916 1716 412 4716 Drop Center 412 11 5 S4545DW 164 74 8916 4916 312 4716 3 76 S3045FW 66 30 8716 4716 212 214 312 89 S3545FW 1 10 50 812 6716 212 238 4 102 S4045FW 146 66 812 712 2716 238 Flat Face 412 11 5 S4545FW 164 74 8916 7916 2916