How are DT hubs graded?

[MacMadeline]

Under the same brand, some are graded based on the number of bearings, some are priced higher for being lighter in weight, and others are based on materials, such as carbon fiber being more expensive. Brand-name hubs are even more expensive; for example, HOPE is much pricier than Novatec, and there's certainly a difference in quality. Here are the distinctions regarding DT hubs: 1. Front hub comparison: The 240s has an inner diameter of 15mm, while the 350s has an outer diameter of 10mm, resulting in the most direct impact: the 240s facilitates conversion between 15mm thru-axles and quick releases; the 240s uses bearing model 6902, and the 350s uses bearing model 6000. The 6000 has higher dynamic load capacity, while the 6902 has higher static load capacity, with little difference in strength. 2. Rear hub comparison: The differences are minimal, whether in terms of outer diameter and bearing models, freehub structure, or shell geometry, there's basically no difference. The biggest difference is that the 240s has a native groove to lock the main bearing, while the 350s uses a bearing bushing to press against the inner rings of the bearings on both sides of the shell.