Compare
7 vs 14 vs 30 piece oil filter cap socket sets
Three diameter envelopes with NO_MATCH below 24 mm, in the 39–64 mm gap, or above 108 mm.
| Class | OD envelope | Best for |
|---|---|---|
| 7-piece | 24–38 mm | Small cartridge/plastic caps |
| 14-piece | ~65–100 mm | Common mid/large cups |
| 30-piece | ~65–108 mm | Wider shop coverage within this ladder |
| 39–64 mm gap | not covered here | NO_MATCH — specialty cup/strap |