I'm trying to figure out what socket size I need for some 12 point bolts, they have 120° corners so I'm assuming double hex rather than triple / XZN & the heads, point to point are 7.07mm across. I've has a look at the regular online fastener spec pages, but I'm not coming up with anything. Dumb question, but are regular bi-hex sockets used with 12 point bolts or are they specific? If it's of any use this is on a hermetic motor which I think originated in Europe. Thanks.