Pedros Pro Chain Whip. The Pro Chain Whip design focuses on functionality practicality and safety. The innovative chain retention hook offers multiple benefits. First it keeps the chain secured to the tool during storage. Secondly it improves user safety by locking the tool onto the cassette ensuring full chain wrap and eliminating slippage. An added bonus of this feature is that the tool stays in place on its own. No more fumbling with your cassette lockring tool with one hand while trying to keep your chain whip in place. Being attached to the cassette the Pro Chain Whip can also be used to slide the cassette off the hub. A nice option when dealing with grimy gears. Keeping traveling mechanics and portability in mind the Pro Chain Whip geometry maximizes effective leverage while keeping the tool length to a compact 270mm and 225g weight. The integrated fixed gear lockring wrench optimized for 41-42mm OD lockrings adds versatility and is one less tool to carry. The Pro Chain Whip is compatible with all multi-gear cassettes including 12-speed and the chain retention hook fits cogs up to 18 teeth.