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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 | 30 | 60 |  | |
| 35 | 35 | 70 | | |
| 40 | 40 | 80 |