★ I have other typewriter items ★ Please take a look ★ Two (x2) Replacement Ribbon Spool Thumb Nuts for Underwood 330 Typewriters (like the example in the inset; actual typewriter not included). 100% functional. As Pictured. Complete your Typer! Be sure your machine has the thinner posts with the threaded tops to accommodate these thumb nuts. Some versions had thicker posts without the threaded tops. More typewriter fun on my website: antikeychop.com Questions? Please message me. I have other typewriter items. Please take a look. COMBINED POSTAGE: I'm always happy to combine postage to save you money. Refunds are posted after the orders are placed once an accurate rate can be determined.