Madera V2 Cassette Hubs are available in Right or Left hand drive, with a 3/8 3 piece rear axle, or a 14mm solid CrMo rear axle. The 3/8 axle uses an oversized aluminum center axle. They come with sealed bearings, a Profile CrMo 8, 9, 10, or 11 tooth one piece driver, or a standard Profile cassette driver and a 12, 13, 14, 15, 16, 17, or 18 tooth cog. A V2 hub with 3/8" axle and a 9 tooth driver weighs xxx grams, and a 14mm axle version weighs 1lb 3.5 oz / 552 grams. The Profile Hub Guard is compatible with the 14mm Madera V2.