https://www.coxhardware.com/c-1224-specialty-springs.aspx weekly 0.7 https://www.coxhardware.com/p-12991-compression-spring-1332-in-x-1116-in-x-1-in.aspxdaily0.9 https://www.coxhardware.com/p-13002-compression-spring-78-in-x-12-in-x-78-in.aspxdaily0.9 https://www.coxhardware.com/p-13107-torsion-spring-12-in.aspxdaily0.9 https://www.coxhardware.com/p-13108-torsion-spring-12-in-x-1-14-in.aspxdaily0.9