InSinkErator 4-in 0.875-in OD Inlet x 0.875-in Compression Outlet Rubber Dishwasher Connector in the Appliance Supply Lines & Drain Hoses department at Lowes.com
Connecting a Portable Dishwasher to a Pull-Down Faucet Hose | Portable dishwasher, Portable washer, Kitchen faucet
Do it 15/16"-27 Outside or 55/64"-27 Inside Duo-Fit Dishwasher Faucet Adapter - Gillman Home Center