I've got a set of ring/open enders similar (smaller) to what coop's showed , got them for my 21st (14 years ago) and they have copped all manner of abuse since then . They are still normally the first spanner I grab , ok a couple of bolt sizes are a bit in between but they still hold well . I haven't had one that was on properly slip off like I have with a conventional spanner on a slightly worn/rounded bolt or nut . I'd say start off with a set as backup and you'll be surprised how much you use them . Plus when you're going on a raid in a wreckers for things you only carry one tool roll and can do most bolts , metric or imperial .

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I got my cheap version of these from bunning for $20 7/16 1/2 9/16 5/8. they a briliiant! And for $20 a bargain. Mechanism is nice and solid so should last, but if not, i'll just buy more. For that kind of money and how often i use them, they are the right price

Cheers

Aaron

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My only gripe is that sometimes with the ring spanners there is more freeplay slack until it grips the nut than you would get using a normal type of spanner. Normally not really an issue, but on the tight confines of a Mini can be annoying.

Other than that they are a great product and I would recommend them to anyone.

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1970 Mini Deluxe - 1275, Weber, Clive 346 cam, MS 4-pot slotted discs, Megajolt ignition Now with new improved Mambas... almost on the road
1966 Van with Traveller rear seat conversion
2008 Prado GXL
All in various states of repair...

I have been using metrinch tools for many years now and they are great, but yu have to watch the sloppyness on them, tight sapces etc is not a god place, but fantastic design and great spanners and sockets to go with them.
I wouldnt swap them for anything else, other companies like snap on use Z drive etc which is just a copy of waht metrinch started years ago.

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www.minicranks.com add me to your watch list and come back again soon, under construction.