National 25" X 10 Lb Black Garage Extension Spring

National Black Garage Extension Spring is a great product for securing your homes, offices, other spaces. Absolutely durable, the products from National provide excellent quality. They have always tried to produce good quality, safety-identification products to help make the world safer place to be in. They try to deliver the highest quality products in the fastest way possible. Providing a safe environment by making the best quality products is their only motto. (1). End color-coded as per industry standards. (2). Helps in easy identification. (3). Black garage door extension spring with safety cables. (4). Great for 7 high doors with 25" springs weighing 110 lb.