YoYoFactory - Most important item a yo-yo player can own.
The YoYoFactory Multi Tool is a small key-chain sized tool that offers the benefits of 3 much larger accessories.
One side of the Multi Tool offers a high strength bearing removal tool, intended to remove even the toughest large bearings from your yo-yos. On the opposite side of the Multi Tool is a string cutter, which enables you to adjust your string length with ease. Last but not least, protruding from the bottom of the Multi Tool is the same hex key that adjusts the Loop900 mechanism.
A little known fact is that the Loop900 hex key can also be used to remove the axle from most YoYoFactory metal yo-yos!