Size | Outer Diameter (mm) | Inner Diameter(mm) |
AQ | 44.7 | 37.3 |
BQ | 55.7 | 46.1 |
NQ | 70.0 | 60.2 |
HQ | 89.0 | 78.0 |
PQ(PHD) | 114.5 | 101.5 |
AW/AWJ/AWY | 43.7 | 30.7 |
BW/BWJ/BWY | 54.0 | 38.0 |
NW/NWY | 66.8 | 51.0 |
HW | 89.0 | 71.0 |
42mm | 42.0 | 30.0 |
50mm | 50.0 | 37.0 |
60mm | 60.0 | 48.0 |
70mm | 73.0 | 54.6 |
90mm | 89.0 | 69.0 |
S75 | 71.0 | 61.0 |
Standard | Size: Outside dia.*thickness | Length | Bit Size |
BQ | 55.6*4.8 | 1.5m/3m | BQ |
NQ | 70.1*5.05 | 1.5m/3m | NQ |
HQ | 89*5.6 | 1.5m/3m | HQ |
PQ | 114.3*6.35 | 1.5m/3m | PQ |