Our Bicycle Hub mtb with q/r consists of open ends conical barrel with dust cap. Known for its smooth functioning and excellent long working life, our bicycle hub is in great demand in the market. availability spoke holes : 12g/14gfront axle : 3/8" (9.50mm) x 102/108/110mmrear axle : 3/8" (9.50mm) x 136mm x 138mm with spacerthread : 34.8 x 24tpi bscy, 34.7 x 1mm pitch iso- metricholes : 28/28 holes, 36/36 holes