Cone Spring Hook #5 features a durable stainless steel construction with a distinctive conical shape and integrated spring design, providing reliable tension and secure fastening for 5/16 inch elastic cords. This spring hook offers precise wire diameter, coil count, and overall size tailored for industrial and hardware applications, making it an effective and sturdy metal hook ideal for extending or securing elastic cords in outdoor and patio setups. Its design ensures lasting strength and consistent spring action, suited for use as an elastic cord fastener, cord end hook, or extension spring hook where durability and reliable hold are essential.