Aluminum Collars - Amazon
These barbell clamps are made from durable and lightweight high-quality aluminum alloy. High strength, strong and durable, firmly locked in place, can be used for a long time.
Aluminum Collars - Amazon Reviews
Based on 2 reviews from Gym Radar users, the Amazon Aluminum Collars - Amazon have an average rating of 2.84 out of 5. They're currently the #86 most-owned Collars on Gym Radar, with 2 home gyms reporting ownership.
2 Reviews
Performance
3.50 / 5
Build Quality
2.00 / 5
Value
3.00 / 5
User Reviews
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(2.67)
These are definitely OSO knock offs and my pair is odd in that one holds noticeably tighter than the other. Also, it is sometimes hard to open them up enough to where they'll slide onto the olympic sleeves easily. I got tired of trying to make them work as dependable collars and have put them to other uses in my gym (e.g. see attached pic).
(3.00)
They look suspiciously like Rogue’s OSO collars. Since they’re made of aluminum they bend very easily if you step on them or try to use them on a specialty bar. Not really the collars fault though. The plastic lever and mechanism also lead to problems with the collar keeping its shape.