The Flex Series Urethane Sets from PowerBlock are the fourth generation of PowerBlocks. The Urethane coated weight plates offer the ultimate in smooth and quiet performance in addition to Flex technology (patent pending) in both the weight plates and the selector pins making for the most durable PowerBlock ever. The steel side colored rails are powder coat painted and are on both sides of each block. There no welded parts on the Urethane weight plates. Urethane Series products carry a lifetime home warranty. Black Urethane coated weight plates with rounded tops and PowerBlock logo. Machined Steel Powder coat painted colored side rails on both sides of each block. The Handle has padded wrist supports and Urethane Weight Plate non welded design constructed with "flex" technology. All Urethane models selector pins have "flex" technology as well.
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