Cage length: Stamped steel inner and outer long cage to accommodate a wide range cassette

the m8100 hub from Shimano lets you run the new 12-speed Shimano cassettes

Charging Method and Time: The charging method and time aren't listed by the manufacturer but they to note this:

Ambidextrous design allows the same part to be used as either a right or left lever

light and comfortable elbow protectors

Crank Brothers Synthesis Freehub Body - Shimano HG Splined - Steel Replace Images Cage length: Stamped steel innerThese replacement freehub bodies are for the Crank Brothers Synthesis Wheels. Steel freehub bodies are more durable especially for HG drivers. Alloy freehub bodies are lighter. Includes: Freehub Body Driver side endcap Available for XD, HG, and Microspline freehubs.