Nikon S-Series High Rings Black Matte (Steel);

The S-Series rings incorporate a square, stainless steel recoil control key in both the front and rear rings. This ensures a "no slip" positive recoil surface across the entire Slot of the base that is capable of withstanding extreme recoil. They utilize four (4) T-15 Torx-style socket cap screws per ring for secure optics mounting for increased strength and riflescope alignment. The ring band width is also substantially wider than typical rings, offering more ring-to-scope clamping area to hold the riflescope firmly in place.