The Box One Stealth Expert Hubset is designed to be light weight for light weight riders, and features small hub flanges, lower spoke counts and decreased material to keep the weight downEnduro ABEC 5 low-drag sealed bearingsPrecision German made one way roller bearingFits standard Shimano cogsMicro pre-load adjusterAngled hub flangesPrecision spoke holesStainless knurled dropout grip rings8mm hex boltsRecommended Rider weight under 140lbsRR1sp Cass28HB/O 10mmAlloyBlackRIM110405020243531UPC/EAN/GTIN: 639266097068