I bought this mattock replacement handle from bunnings its fiberglass. I brought it home and couldn't find any instruction on it or the company website and i've been searching for the past hour for any tutorials. How am i supposed to secure the handle to the mattock head to the handle here? The handle slides on but it doesn't fit securely and there's no wedge slot like wooden ones have.
https://www.bunnings.com.au/trojan-mattock-replacement-handle-20113352_p0404523