Universal Faucet Handle Pair Cold and Hot Water Adapts and Fits on Most Lever REPLACEMENT Handle Stems for shower and/or bath mixers ADA compliant - Walmart.com
All Metal Shower Arm Diverter Valve for Hand Held Showerhead And Fixed Spray Head, G1/2 3-Way Bathroom Universal Shower System Component Replacement Part, Brushed Stainless Steel - Amazon.com
Delta Angular Chrome 3.438-in Universal Shower Mixer (0.5-in-ID) in the Bathroom & Shower Faucet Accessories department at Lowes.com
Universal Three-speed Shower Head High Pressure Rain Bath Showers Adjustable Water Saving Mixer Aerator For Bathroom Accessories _ - AliExpress Mobile
Caroma Universal Bath / Shower Mixer Inwall Body | Caroma