Thanks. In fact I found the REI listing after posting. They give weight but not size. Size is probably not critical for their intended purpose but is for mine. It's looking a bit irrelevant anyway since they're three times the weight of the ones I'm currently using. Mine are a very old version bought from REI way back in the '60's when REI was little more than a US source for European climbing hardware. They are:
2-1/16" o.d.
1-1/2" i.d.
11.7 g (0.41 oz)
The current Omega rings are 34 g
The current SMC rings are 26 g
These newer versions are probably much stronger than my antiques but since I won't be rappelling from them I'll save both the weight and the bucks.
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