Available in both four-screw and six-screw versions. Crafted of machined 7075-T6 hard-anodized aluminum, with titanium cross bolts and jaws, they give you the performance of steel at half the weight. This unique construction provides strength well beyond that normally found in lightweight rings. The four-screw ring will provide a lifetime of service for most applications. If you think you need a 50% more clamping force, the six-screw Ultralite rings will hold your riflescope under any conceivable situation. Nightforce Ultralite rings are offered in four heights to fit 34mm tubes. Need help picking the right rings for your new Nightforce scope? See our guide here.