The park tool cp 1 chain whip pliers ensures you have a fast and easy one handed operation with no manual adjustments required when removing cassette lock rings these pliers will securely grip 9 to 24 tooth cassette cogs these park cassette pliers are 35cm long to give you extra leverage and the dual density gips offer you increased comfort a forged steel constructionon offers increased durability and they also have a spring loaded return park cp 1 chain whip pli