Impregnated diamond bits
Diamond bit types.

Metric core bit
Wire Line core bit
Nominal sizes in mm. CORE BIT SHELL
TYPE O.D. I.D. O.D
  T 36 36.0 21.7 36.3
B 46 T246 46.0 31.7 46.3
B 56 T2 56 56.0 41.7 56.3
B 66 T2 66 66.0 51.7 66.3
B 76 T2 76 76.0 61.7 76.3
B 86 T2 86 86.0 71.7 86.3
B 101   101.0 86.7 101.3
  T2 101 101.0 83.7 101.3
B 116   116.0 101.7 116.3
B 131   131.0 116.7 131.3
B 146   146.0 131.7 146.3
TT 46   46.0 35.3 46.3
TT 56   56.0 45.2 56.3
T6 76   76.0 57.0 76.3
T6 86   86.0 67.0 86.3
T6 101   101.0 79.0 101.3
T6 116   116.0 93.0 116.3
T6 131   131.0 108.0 131.3
T6 146   146.0 123.0 146.3
T6 S 76   76.3 47.7 N.A
T6 S 86   86.3 57.7 N.A
T6 S 101   101.3 71.7 N.A
T6 S 116   116.3 85.7 N.A
T6 S 131   131.3 100.7 N.A
T6 S 146   146.3 115.7 N.A
T6 N   75.3 57.0 75.7
T6 H   98.8 79.0 99.2
T6 S   146.0 123.0 146.3
86 GM2   86.0 62.5 86.3
101 GM2   101.0 72.5 101.3
116 GM2   116.0 86.0 116.3
46 GM   46.0 30.3 46.3
AGM   47.6 30.3 48.0
BGM   59.6 41.9 59.9
NGM   75.3 55.9 75.7
AQWL   47.6 27.0 48.0
BQWL   59.6 36.4 59.9
NQWL   75.3 47.6 75.7
HQWL   95.6 63.5 96.1
PQWL   122.0 85.0 122.6
SQWL   146.0 102.0 146.6
NQWL-3   75.3 45.1 75.7
HQWL-3   95.6 61.1 96.1
PQWL-3   122.0 83.1 122.6
GEOBOR P   122.0 83.0 122.6
GEOBOR S   146.0 102.0 146.6
Nominal sizes in mm. CORE BIT SHELL
TYPE O.D. I.D. O.D
TAW 47.6 33.2 48.0
TBW 59.6 44.9 59.9
TNW 75.6 60.7 75.7
HWF 99.2 76.2 N.A.
PWF 120.6 92.1 N.A.
SWF 146.0 112.8 N.A.
412 F 107.2 74.6 N.A.
EWG EWL EWF EWM 37.3 21.5 37.7
AWG AWL AWF AWM 47.6 30.1 48.0
BWG BWL BWF BWM 59.6 42.0 59.9
NWG NWL NWF NWM 75.3 54.7 75.7
HWG HWL HWF HWM 98.8 76.2 100.2
EWT 37.3 23.0 37.7
AWT 47.6 32.5 48.0
BWT 59.6 44.5 59.9
NWT 75.3 58.8 75.7
HWT 98.8 80.9 99.2
K2-K3 76 76.0 48.0 76.3
K2-K3 86 86.0 58.0 86.3
K2-K3 96 96.0 68.0 96.3
K2-K3 101 101.0 72.0 101.3
K2-K3 116 116.0 86.0 116.3
K2-K3 131 131.0 101.0 131.3
K2-K3 146 146.0 116.0 146.3
CASING SHOES
Nominal sizes in mm. SHOE BIT
TYPE O.D. I.D. O.D
  66 mm 66.0 57.0 55.0
  76 mm 76.0 67.0 65.0
  86 mm 86.0 77.0 75.0
101 mm 101.0 88.0 86.5
116 mm 116.0 103.0 101.5
131 mm 131.0 118.0 116.5
146 mm 146.0 133.0 131.5
AW 59.6 48.2 45.2
BW 75.3 60.2 56.3
NW 91.8 76.0 72.1
HW 117.5 100.9 95.9
PW 143.5 123.8 117.7
SW 172.5 150.9 143.1
AQ 47.6 34.9 32.6
BQ 59.2 46.0 45.4
NQ 72.4 60.3 56.4
HQ 91.9 77.5 73.6
PQ 120.3 103.1 99.4
SQ 143.0 125.3 121.6

Other diameters under request