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| Bore Inch | OD | Width | Set Screw | AC&C | DSP | Ruland | Stafford | Climax | Collar & Coupling |
| 1/4×1/4 | 11/16 | 1-1/8 | 4-40×3/8 | SCR 1/4×1/4 | S2C-025-025-BLA | SPX-4-4-F | 7L004004F | 2ISCC-025-025 | 2CCF-1/4-1/4 |
| 3/8×3/8 | 7/8 | 1-3/8 | 6-32×3/8 | SCR 3/8×3/8 | S2C-037-037-BLA | SPX-6-6-F | 7L006006F | 2ISCC-037-037 | 2CCF-3/8-3/8 |
| 1/2×1/2 | 1-1/8 | 1-3/4 | 8-32×1/2 | SCR 1/2×1/2 | S2C-050-050-BLA | SPX-8-8-F | 7L008008F | 2ISCC-050-050 | 2CCF-1/2-1/2 |
| 5/8×5/8 | 1-5/16 | 2 | 10-32×1/2 | SCR 5/8×5/8 | S2C-062-062-BLA | SPX-10-10-F | 7L010010F | 2ISCC-062-062 | 2CCF-5/8-5/8 |
| 3/4×3/4 | 1-1/2 | 2-1/4 | 1/4-28×5/8 | SCR 3/4×3/4 | S2C-075-075-BLA | SPX-12-12-F | 7L012012F | 2ISCC-075-075 | 2CCF-3/4-3/4 |
| 7/8×7/8 | 1-5/8 | 2-1/2 | 1/4-28×5/8 | SCR 7/8×7/8 | S2C-087-087-BLA | SPX-14-14-F | 7L014014F | 2ISCC-087-087 | 2CCF-7/8-7/8 |
| 1×1 | 1-3/4 | 3 | 1/4-28×5/8 | SCR 1×1 | S2C-100-100-BLA | SPX-16-16-F | 7L100100F | 2ISCC-100-100 | 2CCF-1-1 |
| 1-1/4×1-1/4 | 2-1/16 | 3-1/4 | 1/4-28×5/8 | SCR 1-1/4×1-1/4 | S2C-125-125-BLA | SPX-20-20-F | 7L104104F | 2ISCC-125-125 | 2CCF-1-1/4-1-1/4 |
| 1-3/8×1-3/8 | 2-1/4 | 3-1/2 | 1/4-28×5/8 | SCR 1-3/8×1-3/8 | S2C-137-137-BLA | — | 7L106106F | 2ISCC-137-137 | 2CCF-1-3/8-1-3/8 |
| 1-1/2×1-1/2 | 2-1/2 | 3-3/4 | 1/4-28×5/8 | SCR 1-1/2×1-1/2 | S2C-150-150-BLA | — | 7L108108F | 2ISCC-150-150 | 2CCF-1-1/2-1-1/2 |
