First, I cut two small rectangles (1cm x 2cm) from some 1/16″ aluminum bar stock with a small hacksaw, one for each ear cup yoke. You can find short lengths of aluminum bar stock (flat or angled) at your local hardware store or one of the “big-box” home centers (Lowe’s, Home Depot, etc.). Same for the hacksaw.
https://www.amazon.com/Sony-MDRXB950BT-Extra-Bluetooth-Headphones/dp/B00MCHE38O

