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This ratchet wheel is part of a seatbelt retractor system from Key Safety Systems. The wheel is made from a low-emission, impact-resistant thermoplastic from Ticona.

When you are developing a lightweight, environmentally-friendly vehicle like the Volkswagen up! subcompact, those characteristics have to be considered for every little part, all the way down to things like the ratchet wheel in its seatbelt retractor system. So Key Safety Systems (KSS; keysafetyinc.com) selected a low-emission polyoxymethylene, Hostaform S9364 XAP2 from Ticona (ticona.com) to produce the wheel, as well as the ejector in the belt buckle.

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