NightForce XTRM Ring Set 1.50 Extreme 34mm Ultralite 4 Bolt Black 1.5 Full-Full-Size. The Night Force Ultra Light Ring Sets feature CNC machined 7075 T6 hard anodized aluminum bodies and titanium beta series crossbolts and jaws. This unique construction provides exceptional strength normally not found in lightweight rings. Testing has proven that the Nightforce Ultralight Mounting Rings feature a combination that is actually stronger than steel. Specifications for NightForce UltraLite Ring Set: Manufacturer: NightForce Finish: Matte Tube Diameter: 34 mm Ring Quantity: Pair Quantity: 1 Fabric/Material: Titanium Alloy Condition: New Color: Black Mount Type: Picatinny Attachment Type: Picatinny Package Contents: NightForce UltraLite Ring Set NightForce A227: XTRM Ring Set 1.50 Extreme 34mm Ultralite 4 Bolt Black 1.5 Full-Full-Size