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Hardwood floor spline is an essential fastening component designed to secure hardwood flooring during installation. This product comes in a 1000 linear foot box containing twenty 50-foot lengths, offering convenient portioning for various project sizes. The spline fits into grooved edges of hardwood planks, providing mechanical support that locks boards together and prevents movement or separation over time. Ideal for both professional installers and experienced DIYers, this spline ensures a stable, long-lasting floor installation that maintains structural integrity through seasonal wood expansion and contraction.