447 pound but for total price $250 I can supplie and 8" spring with rate from 1kg to 18kg
1 (kg / mm) = 55.9974146 pounds / in
2 (kg / mm) = 111.994829 pounds / in
3 (kg / mm) = 167.992244 pounds / in
4 (kg / mm) = 223.989658 pounds / in
5 (kg / mm) = 279.987073 pounds / in
6 (kg / mm) = 335.984488 pounds / in
7 (kg / mm) = 391.981902 pounds / in
8 (kg / mm) = 447.979317 pounds / in
9 (kg / mm) = 503.976731 pounds / in
10 (kg / mm) = 559.974146 pounds / in
11 (kg / mm) = 615.971561 pounds / in
12 (kg / mm) = 671.968975 pounds / in
13 (kg / mm) = 727.966390 pounds / in
14 (kg / mm) = 783.963804 pounds / in