Most people might look at these and think they're not necessary, but if you have a fixed set of DBs, you can basically double their use and halve the footprint by adding either the 1.25 or 2.5lbs plates. I have a set of 5-100dbs in multiples of 5 and the 1.25lbs plate set now gives me all the inbetweens (ex: 12.5lbs, 17.5lbs, etc).
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