The Koozer 450 series hub adopts a new 6 pawls-3 teeth /120HD structure, which is an upgrade from the traditional 6 pawls 72HD transmission system. The pawl has changed from single tooth to 3 teeth, andthe gear ring has changed from 36T to 60T. Pedaling feedback is faster and the sound is more denseand pleasant. Ride on the way, full of passion. The size specifications, we supply a wide range of options, the front 5x100/12x100mm,and rear 5x135/12x142; and HGR/XDR/MSR cassette body with tool-free conversion. The spokes can be equipped with J-hook/straight pull, and the brakes can be equipped with 6 bolts/center lock. And with a variety of colors, there will always be one that will satisfy you. New Koozer 450 Rear 5x135mm 12x142 Thru Road/Gravel HGR XDR MSR 8-12s 28/32 Holes E-Bike Parts Center Lock J-bend Bicycle Hubs > Material: Hub body: AL6061 Axle: AL7075 Endcap: AL7075 Cassette body: AL7075 > Spoke holes: 28/32 > Gauge: 14G > Spokes interface: J-bend > Sealed bearings: rear 4 pcs(HG/XD: 6902*2+6802D*1+15267*1) / 4pcs(MSR: 6902*2+6802*1+6802*1) > Axle system: 5x135 QR/12x142mm Thru > Brake interface: Center lock > Cassette body: 6 pawls-3 teeth/120 clikcks,HGR/XDR/MSR, road/gravel 8-12S > Weight: 268g > Colour: black > Warranty period: 2 years Important note: for the explanation of common abbreviations, please check the specifications you need before buying. If you are not sure how to choose, please consult our professional salespersons, and we will give you accurate suggestions. We are not responsible for the losses caused by your own purchase mistakes. 28H/32H/36H = the hub has 28 spoke holes/32 spoke holes/36 spoke holes, can fit your 28/32/36 holes rim. QR = quick release version = rear 5x135mm = rear 10x135mm QR TA = through axle version = THRU = rear 12x142mm HGR/XDR/MSR = the hub's cassette body is compatible with Shimano Road 8-11 speed cassette and Sram PG series 8-12 speed cassette( HGR ) / Sram Road XG series cassette 12 speed( XDR ) / Shimano Road micro spline 12 speed cassette( MSR ). *J-bend= J-hook Cassette body= freehub body

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