Dimension of Core Bits:
A-Gauge Core Bits: AQ, AQ-RSG, AWG(AX), AWM, AWT, LTK*8
B-Gauge Core Bits: BQ, BQ-RSG, BQ*2.**0, BQ3, BWG(BX), BWM, BWT, LTK*0, TBW
N-Gauge Core Bits:NQ, NQ-RSG, NQ*3.**2, NQ2, NQ*-RSG, NQ3/NQTT, NQ*-RSG, NQ**3.**2, NMLC, NWG(NX), NWM, NWT, TNW,
H-Gauge Core Bits:HQ, HQ-RSG, HQ*3.**0, HQ*3.**5, HQ3/HQTT, HQ*-RSG, HQ**3.**5, HMLC, HWF-Long, HWF-Short, HWG(HX), HWT
P-Gauge Core Bits:PQ, PQ3, PWF-Long, PWF-Short
S-Gague Core Bits:SWF-Long, SWF-Short
U-Gague Core Bits: UWF-Long, UWF-Short
Z-Gauge Core Bits: ZWF-Long, ZWF-Short
T, TT, T2&TB Series Metric Core Bits: T*6, TT*6, T***6, TB*6, TT*6, T***6, T***6, T***6Coreline, T***6, T***6Coreline, T****1, T****1Coreline
T6 Series Metric Core Bits:T***6, T***6, T****1, T****6, T****1, T****6
T6S Series Metric Core Bits: T6S**6, T6S**6, T6S***1, T6S***6, T6S***1, T6S***6
B Series(IS******1)Metric Core Bits:B*6, B*6, B*6, B*6, B*6, B*6, B**1, B**6, B**1, B**6