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![Amazon.com: Yoogu 2inch [10Turn] Replacement Furniture Mechanism Extension Tension Springs for Recliner Sofa Bed Trundle - Set of 6 : Home & Kitchen](https://m.media-amazon.com/images/I/61tN1JgOLCL.jpg "Amazon.com: Yoogu 2inch [10Turn] Replacement Furniture Mechanism Extension Tension Springs for Recliner Sofa Bed Trundle - Set of 6 : Home & Kitchen")