Compare
4 vs 6 vs 8 in bench vise classes
Compare bench vise class ceilings against ViseOpen estimates, with verified VEVOR US product examples and an honest NO_MATCH path.
| Class | Clears when | Typical fit | Trade-off |
|---|---|---|---|
| 4 in jaw · 4.7 in max open | opening_in ≤ 4.7 in | Light clamping within about 4.7 in span | Too small for mid-size workpieces beyond 4.7 in |
| 6 in jaw · 6 in max open | opening_in ≤ 6 in | Openings that clear 4.7 in but stay within 6 in | Still short of large assemblies beyond 6 in |
| 8 in jaw · 8 in max open | opening_in ≤ 8 in | Heavier spans that clear 6 in but stay within 8 in | Largest class on this ladder; verify live listing |
| NO_MATCH (above ladder) | opening_in > 8 in | Openings beyond this site’s published ceiling | Do not force the 8 in class — size up outside this screen |