Lever Clamp Barbell Collars

The Strength Co.’s Lever Clamp Barbell Collars are USA-made from extruded aluminum with rubber inserts, using a hinged lever mechanism that clips directly onto a barbell sleeve instead of sliding on like a standard clamp collar. That design keeps them ultra-thin – about one inch of sleeve space per pair – which is the main draw for owners of loadable dumbbell handles and specialty bars (axles, safety squat bars) where a bulkier 2” clamp collar won’t fit or leaves too little room for plates. They’re rust-resistant, sold in pairs, and weigh half a pound each (one pound per pair), a detail reviewers note is handy for plate math since a 20kg/44lb bar plus these collars comes out close to a standard 45lb bar. The current version has a laser-etched black powder-coat finish (replacing an earlier sticker-labeled aluminum finish), and the lever’s wear point is a replaceable UHMW piece rather than a part of the aluminum body itself. Independent coverage (Powerlifting Technique, Garage Gym Lab, Massenomics) is broadly positive on functionality and versatility, with the main knock being that they underperform premium aluminum clamp collars like Rogue’s USA Aluminum Collars on stability under heavy drops.