Cannondale HollowGram Crank Extractor ToolThe Cannondale Hollowgram Crank Extractor Tool allows you to remove Hollowgram crankarms from BB30 Spindle. The Shop-quality two-piece tool gently pulls arms using the spindle threads and outer crankarm threads. To remove: begin by removing crank bolt and super thin washer. Thread in smaller round piece into BB30 spindle using an 8mm hex wrench. Next, hand thread the bigger piece into the clean outer crank threads until it bottoms out on the arm. The inner piece should not be touching yet. Snug the outer piece using a box wrench. Using your 8mm hex, slowly start to unthread the small piece until it starts pulling .680655032016
