Item Type: Freehub Body Product Material: Aluminum Alloy Structure: 2 Bearings Application: For SHIMANO 11 speed, if 8-10 speed, 1.85mm washer needs to be added Hole Diameter: Approx. 15mm / 0.6in1REPLACEMENT PART: This bike freehub body is suitable for SHIMANO 11 speed and can directly replace old or damaged bike accessory. 2ALUMINUM ALLOY: The freehub body is made of excellent aluminum alloy, with high strength, rust and corrosion resistance, and long service life. 3FINE PROCESSING: With fine polishing and grinding, the bike freehub body has a sturdy structure, ensuring strength and improving fastening reliability. 42 BEARINGS: The 11 speed bike freehub body is 2 bearings design, and equipped with a washer for easy installation and replacement. 5BIKE ACCESSORY: The freehub body is lightweight and compact, suitable for mountain or road bike, can be installed and disassembled at any time. 1 x FreehubBody 1 x Washer