Compatible tips for Soldering Iron - 30W

Where can I source replacement tips for the Soldering Iron - 30W? SparkFun only sells 1/64” tips separately. If I want a replacement for the 1/32” tip that came with the iron, then I have to buy a whole new iron. Are the tips proprietary or can I source compatible tips from somewhere else like DigiKey?

Here is a single flat 1/32" Tip.

However, I am not sure if you can use it with sparkfun’s 30W iron.

The tips don’t appear proprietary; we don’t/can’t carry replacement for everything…but at $11 I’d probably just buy another, or grab something that’ll last