Sunrace cnm9z 9 speed chainthis dazzling model delivers fast acceleration and smooth 9 speed shifting across your mtb or road cassette'. '.strtoupper('i')ts chromised hollow pins and rollers make it incredibly durable for tackling the most aggressive runs and longer rides'. '.strtoupper('t')hanks to its crmo steel hollow plates, you'll not have to worry about adding unnecessary weight to your ride as it weighs in at only 254g'. '.strtoupper('t')opped off with titanium nitride coating, it maintains a low friction combined with resistance to corrosion'. '.strtoupper('f')eatures chromised hollow pins and rollers crmo hollow plates titanium nitride 9 speed suitable for mtb or road use 254gbuy sunrace components from chain reaction cycles, the world's largest online bike store.