Everybody knows the importance of doing proper squats for butt and leg training. EZ Squat is a piece of equipment that lets you use Olympic weight plates to perform squats with proper posture, helping you avoid back strains as you push your body.
EZ Squat fits weight plates with 2 1/8″ holes and dumbbell handles up to 1 3/4″ round. You can change weighs easily. More info is available here.