Triphasic ISO Cups

Triphasic ISO Cups are patent pending and were made in collaboration with Cal Dietz of Triphasic Training. They securely hold the barbell in a groove, allowing athletes to perform isometric barbells lifts safely and easily. Compatible with 1" or 5/8" hole racks on 3x3" tubing. Triphasic ISO Cups allow the athlete to focus on the isometric contraction and not worry about the barbell.