Expansion kit 8 weights total Each piece weighs 5 lbs. These are the the last 4 stages Before you purchase please be sure these specific weights will absolutely fit the power block dumb bells you are trying to find weights for. I have contacted the Power block customer service to identify these weights and they identified them as Sport 5.0 If you have any questions please ask so we can be sure these weights will work for you. Thank you for your interest.
eBay