Stans Neo Durasync has a CNC machined hub shell for strength and precision. The fast Durasync has ten-degree engagement and simultaneous six pawl engagement for maximum durability. The Wide bearing stance and axle design reduce flex and add durability.Features:- Triple freehub bearings- The low-drag main seal prevents contamination and reduces resistance- Laser-etched SealLock end caps lock into place and roll smoother- Freehub includes : pawls, springs, pawl retaining ring, red freehub spacer, and spacer for 9 and 10-speed cassettes.- Bearings are pre-installed.The freehub is splined to accept any traditional - Shimano style cassettes.It is not compatible with SRAM XD style cassettes.Freehub includes : pawls, springs, pawl retaining ring, red freehub spacer, and spacer - It is not compatible with SRAM XD style cassettes.

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