This is a 3D printed replacement pads for the Rep Fitness Pr1000 Jcups, These are thicker than stock by almost twice over, as much as I could shove in to the Jcup and not have interfere with one another. Two of the pads hang over the jcup to stop the pad from twisting in place like the stock ones do. Pretty simple replacement just unbolt the old one, shove this one over the Jcup, then screw back in place. I also have included a stock pad replacement and then a full end pad to cover the jcup so you dont smash a barbell on steal. Please print with a large nozzle like a .8mm and use HIPS filament.