Engages the 16 notches of the external bearing cups. Small plastic tool engages the 8 internal splines of the crank arm adjustment cap and engages 16 notches of the external bearing cups for Shimano® BB 9000 for easy removal or installation. * Shimano® is a registerted trademark of Shimano Inc. TOOL MATERIAL CrMo steel / Engineering grade polymer SIZE ø5.2 x 4 cm / ø2” x 1.6” 2 pcs WEIGHT 137 g / 4.82 oz 2 pcs
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