Prior to March 2017 the rear leg was 15 inches long. If you purchased your DeskCycle after March 1, 2017 then your rear leg is 10 inches long, so you already have this leg. This shorter 10 inch leg fits between office chair legs better than the previous 15 inch leg. See the pictures for details. Only a very small number of people may actually need this leg. As an example, you would have to be shorter than 5'3", and your chair legs would have to be close together. Even then you may not need this leg. Some customers have placed the leg behind the 2 front wheels of the chair. If you find that you need this leg, feel free to contact us and we'll send you one for free. Or you can purchase it here on Amazon.
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