i have a ton of those i got a while back before things got crazy
grey teflon coated with green folowers dunno if there anti tilt or not but they dont tiilt at all!!
ive used them downrange -i always liked using my own some of the issue stuff was realy beat!!no feed problems and they hold up well!!had 1 ran over by a hummer just dented it a bit but still fed fine!!
good stuff id reccomed them!!