Finally someone got it right. Bought these grip4orce grips about a month ago and have used them almost everyday. I've always trained with thickbars but the problem with thick bars they only work if your squeezing the bar, other wise there just a waste of money. These Grip4orce grips have this plastic resistance built inside so you have to squeeze and it feels like the bar is trying to open up in your hand. Bodybuilders and powerlifters both can benefit from these grips. The resistance inside these grips takes thick bar training to a whole new level. Arm day will never be trained again without my grips.