For use in a variety of applications; appliances, automotive, marine, toys, tools, mechanical devices, contraptions and more These extension springs are designed with single loop closed ends for easy and reliable fastening to fixed and moving parts Spring dimensions: 7/16 inch outside diameter, 2-1/2 inch length, 0.047 inch wire diameter, 11.5 lbs. maximum safe load, 3.51 inch maximum deflection All springs come in a beautiful, corrosion resistant, nickel plated finish allowing them to be used both indoors and out Constructed of durable spring steel (tempered steel wire) to provide optimum retraction when stretched Designed for use with a variety of household and professional applications Easy to install with only a few simple tools Please refer to the line art drawing for dimensions and compare with your needs before ordering