39-12M40
Medium Duty Springs, 1-1/4" OD x 5/8" ID x 4" Length
![](http://kdgessentials.com/cdn/shop/products/RMBL_SERIES_b1d86197-4716-4792-8765-5ae42f19f5c2_{width}x.jpg?v=1650936655)
![](http://kdgessentials.com/cdn/shop/products/MEDIUM_DUTY_DIE_SPRINGS_US_SERIES_a9f1e69f-b745-4593-8a06-2772958f12db_{width}x.png?v=1650936655)
Medium Duty Springs
1-1/4" OD (Dh)
5/8" ID (Dd)
4" Length
.115 X .285 Wire
1-1/4" OD (Dh)
5/8" ID (Dd)
4" Length
.115 X .285 Wire
![39-12M40 <hr> Medium Duty Springs, 1-1/4" OD x 5/8" ID x 4" Length](http://kdgessentials.com/cdn/shop/products/RMBL_SERIES_b1d86197-4716-4792-8765-5ae42f19f5c2_{width}x.jpg?v=1650936655)
![39-12M40 <hr> Medium Duty Springs, 1-1/4" OD x 5/8" ID x 4" Length](http://kdgessentials.com/cdn/shop/products/RMBL_SERIES_b1d86197-4716-4792-8765-5ae42f19f5c2_{width}x.jpg?v=1650936655)
![39-12M40 <hr> Medium Duty Springs, 1-1/4" OD x 5/8" ID x 4" Length](http://kdgessentials.com/cdn/shop/products/MEDIUM_DUTY_DIE_SPRINGS_US_SERIES_a9f1e69f-b745-4593-8a06-2772958f12db_{width}x.png?v=1650936655)
![39-12M40 <hr> Medium Duty Springs, 1-1/4" OD x 5/8" ID x 4" Length](http://kdgessentials.com/cdn/shop/products/MEDIUM_DUTY_DIE_SPRINGS_US_SERIES_a9f1e69f-b745-4593-8a06-2772958f12db_{width}x.png?v=1650936655)
![](http://kdgessentials.com/cdn/shop/products/RMBL_SERIES_b1d86197-4716-4792-8765-5ae42f19f5c2_{width}x.jpg?v=1650936655)
![](http://kdgessentials.com/cdn/shop/products/MEDIUM_DUTY_DIE_SPRINGS_US_SERIES_a9f1e69f-b745-4593-8a06-2772958f12db_{width}x.png?v=1650936655)
![](http://kdgessentials.com/cdn/shop/products/RMBL_SERIES_b1d86197-4716-4792-8765-5ae42f19f5c2_{width}x.jpg?v=1650936655)
![](http://kdgessentials.com/cdn/shop/products/MEDIUM_DUTY_DIE_SPRINGS_US_SERIES_a9f1e69f-b745-4593-8a06-2772958f12db_{width}x.png?v=1650936655)