Features
| Type | Permanent |
| Shape (Rectangular, Round, Square, etc.) | Round |
| Magnet Pole Type (Fine Pole, Fine Pole & Standard Pole, etc.) | Parallel |
| Width/Diameter (Inch) | 15-3/4" |
| Width/Diameter (Decimal Inch) | 15.7500" |
| Width/Diameter (mm) | 400.05mm |
| Length (Inch) | 2-15/64" |
| Length (Decimal Inch) | 2.2400" |
| Length (mm) | 56.90mm |