Amazon.com : 1/2" Universal Typewriter Ribbon, Black. for Vintage Typewriters. 2" Spools. Fits Most Royal, Olympia, Smith Corona, Remington, Olympia, Brother, and Other Vintage Typewriters : Office Products
Amazon.com: Vintage Manual Typewriter Spool Ribbon Black Ink- for Royal : Office Products
Royal Classic Manual Typewriter Mint 11 Print Width Impression Control Lever Paper Support Bar Ribbon Color Selector Tab Position Line Spacing - Office Depot
Metal loop/hole in centre of new typewriter ribbon (first time changing ribbon) : r/typewriters