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ColinTheBald

I would go with 12mm, anything much less is liable to bend if you hit a brick or whatever as you're whacking it in. You probably know, but it comes in 3m lengths.

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gbj_tester in reply to @ColinTheBald

12mm, anything much less is liable to bend if you hit a brick

If you hit anything stout enough to bend #3(US)/#10(Metric)/⅜"/9.5mm rebar, you'd be better off moving to one side of it than trying to plough through it with #4

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ColinTheBald in reply to @gbj_tester

Stating the bleeding obvious. The point being that a lighter bar could bend BEFORE you manoeuvre it around the obstruction if you are giving it a good clout,12mm won't.

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