Also Available in a Bulk 15 Pound RollNew Durable Plastic SpoolThis CRL Screen Retainer Spline is a high quality, hollow core vinyl used for repairing, re-screening or fabricating window, door and patio screens. This 500 foot roll comes with a new durable plastic spool that makes it easy to handle. The gray spline blends well with aluminum or gray fiberglass screen wire and mill colored frames. The black spline blends well with charcoal aluminum or fiberglass screen wire and bronze colored frames.