Kelbly scope rings are some of the most precision-made rings available. They are CNC machined from solid bars of aluminum, resulting in matched sets. These exacting tolerances make Kelbly rings the number one choice of benchrest shooters. All Kelbly rings are designed to mount on Stolle Dovetails or Davidson bases (see Davidson listing below). Available in single screw and double screw models, bead blasted or matte black (anodized) finish. All rings are sold as pairs.
Kelbly rings are available in three heights to accommodate most shooters requirements:
Short: Designed for mounting scopes on varmint rifles or hunting rifles using Davidson bases. Gets the scope closer to the centerline of the bore. Short height is available in 1" Double Screw only.
Standard: This is the most popular height used on Stolle actions and the most popular among benchrest shooters. This height also works well with large objective scopes such as Nightforce and Burris on varmint and hunting rifles. Standard height is available in 1" and 30mm, double or single screw, black or bead blasted finish.
Tall: This ring design provides target shooters with several desirable benefits: 1) recoil effect is more consistent because cheek contact with the stock is all but eliminated, 2) puts your body in a better position more directly behind the rifle to cut down on gun handling errors, and 3) allows your head position to be more upright which is a more relaxed position and much better for watching wind flags.
Big Book Catalog, Issue:68, Page:272
Sinclair, Issue:5A, Page:208