If you're out detecting you might as well carry a good quality multitool. I have a few brand new Leathermans up for grabs at unbeatable prices so please give me a shout at aotdks@gmail.com if you need one of these. They're all brand new and carries the factory warranty. And no dammit! I did not steal them. It's stock that I still have after closing the knifeshop.
You never know when you might need it.
Leatherman Kick R350.00
Leatherman Surge R1000.00
Leatherman Supertool 300 R800.00 (No Box)
Leatherman Expanse R450.00