It can easily happen that you knock the shim rings at the crankshafts too far in, and thereby mistakenly block the lubrication channels. This results in faulty crankshaft bearings in record time, which is the last thing you want after installing a new crankshaft in your engine block.
Easyboost has solved this problem with this cleverly designed tool so that you cannot push the shim rings too far into the block and thereby guarantee a perfect installation, every time. The tool fits perfectly around the edge of the shim rings and the built-in elevation ensures that you do not drive the shim rings too far into the block, as the tool goes on the edge of the block before the accident occurs.