pullbar spring origin

[jasjenh]

I was just wondering if someone could help me identify a pullbar spring I bought with a pullbar at a swapmeet. it is black in color and has 515 prog engraved on the top. Its 5 inches in diameter and 6 and 5/8 tall. I bought the pullbar just for the pullbar but it would be nice to maybe use the spring to. Any help would be greatly appreciated.

[hammond motorsports]

500-1500 lbs progressive and my be a Integra spring if it was not just painted black .

[jasjenh]

Hey thanks for the help. It has not been painted and that would make sense the way the numbers are engraved in the top. Now I just need to figure out if I want to use it. Thanks again!