It's a ender 3 sock, go to Amazon and order a bunch of spares. This is the one I ordered and it fits perfect. https://www.amazon.com/gp/product/B07N18BZQM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

I have 4 printers the SV06 is by far the best print quality and prints the fastest.