Isky Tool Steel valve springs

Had these on my car for maybe 5 races then changed setup, like new condition. $150 free shipping to US or Canada

Isky 9315-PLUS tool steel springs
Outer OD 1.550” Outer ID 1.025”, Inner OD 1.135” Inner ID .740”
Seat pressure 225 lbs @1.900”
Open pressure 530 lbs @ 1.240”
Rate inch 480
Coil Bind 1.130
Max lift ..660
Type of cam: Roller