Replacement extension springs designed as directfit replacements for Compatible with PrimeLine 21/2 in. L x 5/8 in. D extension spring (2 per pack). This offer contains 10 packs for a total of 20 springs, providing spare parts for multiple repairs or projects. Key benefits Direct replacement: Matches the specified 21/2 in. length and 5/8 in. diameter for compatible window and door hardware, making fast and straightforward. Ready quantity: Ten 2pack sets included, giving a total of 20 springs to cover multiple doors, windows, or maintenance needs without repeated orders. Reliable tension: Designed for consistent extension and rebound to restore proper operation of assemblies that rely on spring tension. Suitable for professionals and DIYers: Packs provide enough parts for small contractors, property maintenance, and home repairs. Important attributes Function: Extension springs for restoring tension in hardware assemblies that use a pulling force to or hold components. Compatibility: Intended as a replacement for the specified 21/2 in. L x 5/8 in. D extension spring compatible with PrimeLine hardware. Size: 21/2 inches in length, 5/8 inch diameter. Quantity: 10 packs included, each pack contains 2 springs, total 20 springs. Performance: Engineered to deliver repeatable extension and reliable operation when installed to match original specifications. Typical applications Window balance and sash repairs where extension springs control counterbalance and smooth operation. Screen doors and storm doors to worn or broken springs that no longer hold the door securely or it properly. General door and hardware maintenance on porches, patios, or lightweight gate latches that specify the same spring dimensions. Installation notes Verify the 21/2 in. length and 5/8 in. diameter match the original part before installation. Install as a direct replacement to restore original tension characteristics and ensure proper alignment in the assembly. Suitable for routine and preventive maintenance; keep spare springs on hand to reduce downtime. Pack contents Ten packs of two springs each, total twenty extension springs matched to the specified size and compatibility. This product provides a practical, quantityminded replacement option for restoring spring tension in compatible hardware, reducing the need for multiple purchases and supporting timely repairs.