350 Dependable Independence – Reliability, versatility and simplicity united in a hub. The 350 hub is a dependable partner for every adventure either with its 36 tooth proven freehub Ratchet system or the fast engaging Ratchet DEG system with 72 points of engagement. The sophisticated yet simple construction of the hub allows a low weight while providing outstanding rolling performance. Furthermore, it enables cyclists not only to maintain their freehub system without special tools, but also to convert to the various standards. The intention behind the 350 was to create a dependable hub that supports cyclists in their independence.72 points of engagement, Limited Edition Color. Achieving a different engagement angle from what DT Swiss has done to date required a major adaptation to the.