| Zero Adjustment Coupling Clamp Hub  | 
 | 
| Part | Bore 1 | Bore 2 | Material | Hub Diameter | |
|---|---|---|---|---|---|
| Buy | View | Stainless Steel | |||
| CSS-N6-50 | .1200 | .1200 | Stainless Steel | .188 | |
| CSS-N6-51 | .1200 | .1248 | Stainless Steel | .188 | |
| CSS-N6-52 | .1200 | .1873 | Stainless Steel | .188/.250 | |
| CSS-N6-53 | .1200 | .2498 | Stainless Steel | .188/.312 | |
| CSS-N6-54 | .1248 | .1248 | Stainless Steel | .188 | |
| CSS-N6-55 | .1248 | .1873 | Stainless Steel | .188/.250 | |
| CSS-N6-56 | .1248 | .2498 | Stainless Steel | .188/.312 | |
| CSS-N6-57 | .1873 | .1873 | Stainless Steel | .250 | |
| CSS-N6-58 | .1873 | .2498 | Stainless Steel | .250/.312 | |
| CSS-N6-59 | .2498 | .2498 | Stainless Steel | .312 | |