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Cylinder is reversible allowing either side to be used externally (Excludes Thumbturn and Half Cylinders)
Size  (External) |
Size  (Internal) |
Size  (Overall) |
Thumbturn | Colours |
|---|---|---|---|---|
| 30 | 10 | 40 | ||
| 32 | 32 | 64 |  | |
| 37 | 37 | 74 | | |
| 41 | 41 | 82 | ||
| 42 | 42 | 84 | |