The PowerBlock Sport 9.0 Stage I 50 lb Set can be expanded from 50 lbs to 90 lbs with the Sport 9.0 Stage II Kit.
Simply put the Sport 9.0 50 lb Set weight plates inside the Sport 9.0 Stage II weight plates and you're ready to go. Stage II Kit dimensions: 16" L x 6.5" W x 6.5" H. Weight 40 lbs each. Ships in 2 boxes.
