BBB PowerPull Crank Puller is a workshop quality tool ideal for Professional or Home mechanics alike. Although officially BBB stands for Bikeparts for Bikers by Bikers we also believe that we provide the following : Bold Innovation - Brilliant Designs - Beyond Expectation. Seperates the crank from the bikes bottom bracket. It has a dual function removable cap, so the pulley can be used on all over-sized spindles. Without the cap the tool can be used on all standard spindles. JISISISOctalink.