A great choice from Chinook for those looking for a lighter weight Standard Diameter Mast without breaking the bank.
| Item | IMCS Stiffness | IMCS Bend Curve | Flex Type | Weight |
| 400cm | 19 | 63B / 77T | Constant Curve | 4.0 lbs. or 1.8 kg |
| 430cm | 21 | 63B / 77T | Constant Curve | 4.1 lbs. or 1.86 kg |
| 460cm | 25 | 63B / 77T | Constant Curve | 4.7 lbs. or 2.11 kg |
| 490cm | 28 | 63B / 77T | Constant Curve | 5.5 lbs. or 2.48 kg |