Inspired by the concept of the finger trap - ROOLOX Barbell Collars slide on easily, but tighten when pressure pushes against it, providing a secure hold for your weights.

  • Easy To Use

    The ROOLOX collar is symmetrical and accessible from any direction. You won't have to rotate the bar to find the release lever. The locking sleeve takes minimal effort and can be installed and removed effortlessly.

  • Strong Holding Power

    The collar is designed to squeeze the bar tighter when weight is applied. Three urethane rubber grippers swivel against the bar shaft using friction to mechanically multiply the gripping power.

  • Climbing Action

    This is one of the most amazing features. If you are doing a workout with multiple reps and dropping the barbell between lifts, the vibration of the bar will actually cause the ROOLOX to cinch closer to the weight plates.

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A Revolution in Barbell Collars

A completely new kind of barbell collar: one that is easy to install and remove, and holds consistenly when dropping the bar.



  • "Been testing these collars on everything I do and they can hold anything I throw their way. These babies aren't going anywhere."

    - Jay Benoit, Exponent Edge

  • "I tried REALLY HARD to knock the Roolox barbell colars off. I was unsuccessful. So it would appear the traditional barbell collar system is forever changed."

    - Dan Palacios, Kinetic Training


How does ROOLOX work?

The ROOLOX barbell collar is designed to tighten automatically when pressure is applied, ensuring a secure grip on the weights. The collar is free to move in one direction only, towards the weight plates, making it easy to adjust without unlocking it first. This results in full clamping power achieved through mechanical clamping force when the weight plates press against the collar.

Who can use ROOLOX?

For the lifter in all of us—whether you're a seasoned weightlifter or just starting out, these clamps are designed to provide a secure grip on the weights to elevate your lifting experience.

What is the return policy?

I am so excited about this product! I fully expect everyone who gives it a try to be totally happy with their purchase. If for any reason you are dissatisfied, we will be happy to refund the purchase price and pay for return shipping within 90 days. 

Is there a warranty included?

The ROOLOX barbell collar is warranted against breakage or failure for ONE YEAR from original ship date. If you have any issues with the collars not working as described, we will replace the collars free of charge. Simply call or email to let us know the problem and we will ship you a replacement set along with a prepaid return envelope to send the failed set back to us.

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