Lezyne external bb cassette lockring tool2 way tool that integrates an external bottom bracket and cassette tool into one dual purpose tool designed for use with the 32mm cnc rod or an adjustable wrench tool is made of durable heat treated steel cnc machined for an extremely accurate tool engagement bb socket tool is compatible with most external style bbs cassette tool is compatible with most cassette lockrings featuresexternal bb campagnolo chris king fsa phil wood race face shiman