Check the listing for details. Cup Holder + Phone Holder + Basket Set Designed for Quantum Power Chairs. Color: Black, Condition: New. Listed at 39.99 USD. Specifically designed for Quantum Power Chairs with Tru-Balance Seating **Must have a standard armrest with the rails underneath for proper installation. This package includes a custom cup holder with a phone holder, a storage basket, and all necessary mounting hardware. Cup holder accommodates bottles, cans, tumblers, mugs and cups of various sizes. The basket accommodates phones of all sizes, as well as an array of other items. The phone holder can accommodate devices up 5.5-8 centimeters wide, making it suitable for phones of small to medium size. Large phones can also fit, however the holder is optimally designed for smaller sizes. Installation is effortless: slide into the Uni-Track rail of the armrest, then use the included hardware to secure the holder in place. If you need assistance or encounter any issues with one of our products, please don't hesitate to contact us. We will do our best to ensure your satisfaction. We are continually developing new products, so stay tuned for upcoming releases.