Zerone 12pcs Archery Base Aluminum Inserts,Standard 6.2mm/0.24in Aluminum Carbon Arrow Shaft

Good solid inserts, do what they're supposed to do. Just check for damaged ones. Out of the 12 I received 3 arrived badly crushed so the tip couldn't be screwed in. Wouldn't be too bad but these are nearly 50p each, but still not worth the time sending them back.They are very hard to crush or even bend back into shape so I've no idea what caused the damage. Must have been a lot of force as they are not flimsy thin metal.