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Product Description：
Name：API certified API thread ring gauge
Type：BND-API
| 1 | NC | V-0.038R | NC10-NC77 |
| 2 | IF | V-0.065 | 2 3/8"IF -5 1/2"IF |
| 3 | FH | V-0.065V-0.050V-0.040 | 3 1/2"FH - 6 5/8" |
| 4 | REG | V-0.050V-0.040 | 2 3/8"REG - 8 5/8"REG |
We provide high quality API gauge with API certified and calibration, welcome to send inquiry.
