With your thumb around the OSO Mighty Collar and your finger(s) on the clamp aspect, it locks down quite snugly. The frame shape is a half-circle on the outside diameter and half square where the locking mechanism is housed at. With no ridges or strategic grippiness, the Proloc 1 Collar is easier to drop when not being mindful compared to the OSO and Lock-Jaw designs. At such a lightweight and thickness, plus the aid of the grip ridges, it is one of the most comfortable barbell collars to handle.

The differences boil down to primarily the colors and branding, but there are a few subtleties to note. Barbell collars hold your weightlifting plates on your bar to ensure that they don't slip or fall off while you are working out – protecting both you, and the other equipment in your gym.

The inner diameter is slightly larger and the nature of the hand adjustment bolt so makes it so the Proloc 1 Collar can fit onto a greater variety of barbells.

This barbell lock has been designed to be extremely solid, and therefore ideal for extremely large weights. The OSO MIghty Collars come in two colorways at the moment—a standout blue color as well as a sharp-looking gunmetal color. The locking mechanism of the Clout Fitness Barbell Collar is a simple latch modeled after Lock-Jaw collars. This is not as ergonomic of styling as most of the other collars on this list but honestly won’t bother most people. Keeping your plates in place with some form of collar is necessary to prevent them from sliding off the bar and causing potential injury.Our first impressions were that it’s nice to have a strap system since you can fit it to pretty much any diameter of the barbell. All that being said, the first thing a lot of lifters talk about with the OSO Barbell Collars is how they look. It’s important to note that you can’t purchase spin lock collars without a spin lock bar to attach them to. The OSO Polymer Collars are pretty much the same design as the others in the OSO line-up, except that a strong synthetic polymer is used to make the frame. OSO CM-1 Metal Collars: These are the same design as the CP-1 Collars but are made out of aluminum instead.

Rather than using a latch, they use a screw top that is quick to take on and off and is somewhat secure (although not nearly as secure as the competition in our testing. Designed to keep your weight plates securely on your barbell, collars are a basic weight room safety requirement. The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products. We have yet to find a pair of collars that hold weight as well or are as easy to use as these collars from Rogue/OSO. The variety of barbell clips available caters to different barbell types, including standard and Olympic bar clips.They’re often the most expensive type of barbell collar, and are only compatible with Olympic barbells. The Clout Fitness Barbell Collar holds up quite well but gets bruised up quicker due to the simpler plastic material used. It will immediately curl around the collar, and then all you have to do is fix the rubber lock over the hook to secure it into place. Weight bar clips are not only used for traditional weightlifting but also in functional training and high-intensity workouts where quick and frequent weight changes are common.