I've used these since I started with freeweights years ago.I recently moved for college and accidentally left mine in storage, so I had to order another pair to go with the bar I purchased locally.I tried to make do with those cheap metal spring clamps, but got annoyed with them after about one set.I had used the same pair of them for years and they worked just as good as when I got them.They slide on and lock easily, and don't scratch up your bar like the metal kind do.They are made out of some kind of tough plastic, but have little rubber pads on the inside that press against the bar when in the locked position.
As with any bar clamp, do not take the process of securing the weights lightly.I always visually check the clamps immediately before lifting, because when you get in a routine you sometimes forget details.Gravity does not forget.
Product Description
Olympic Muscle Clamp Collar-Pair
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