Stylish and Strong! A forged aluminium B-Knuckle improves stiffness while the X.9 styling exudes our commitment to quality. X.9 is now available in three cage sizes. Technology: 1:1® actuation ratio, Direct Route Technology. Speeds: 9 or 8. Material: Aluminum Alloy - Composite Cages. Compatibility: 1:1. Weight: 230 g / 227 g / 212 g.