With its ergonomic design and long, double-dip lever handle, this chain whip removes 1/8˝ fixed-gear and single-speed cassette sprockets easily and without slipping. A magnet at the end of the chain helps secure it to the sprocket for easy storage. A constant-mesh sprocket locking key is included in the tool body. Made of laser-cut tool steel and heat-treated for strength and durability. material: premium flex plus carbon steel surface finish: chrome plated in accordance with ISO 1456:2009 The magnet keeps the chain in place and makes it easy to store.