A handy tip, Luke. I have been meaning to do my echo one , as with it being a bend shaft model , you have to buy the whole head when the bottom wares out.😮
I usually forget to do this myself and they wear out, you know what it’s like we just use them and use them, I’d say when they wear about a 3rd that’s when it’s worth doing this, I can’t bring myself to drill a brand new one it just seems wrong 😂 but it does work well and they last ages 🙂👍