Tier One Tactical Rings - 30mm Low Black. These rings made from high-grade 7075T6 aluminum provide maximum strength-to-weight ratio with sizes ranging from 30mm to 40mm and various heights to fit diverse setups. No lapping is required when mounted on a quality Picatinny Rail and a built-in anti-cant bubble ensures level shooting. The six-screw ring caps ensure ultra-secure optic mounting and each pair is precision-machined in a single operation for absolute accuracy. The set including Torx bits comes in a hard case with a mil-spec anodized finish for a sleek durable exterior. Specifications for Tier One Tactical Scope Rings: Manufacturer: Tier One Finish: Anodized Quantity: 1 Fabric/Material: 7075T6 Aluminum Color: Black Features of Tier One Tactical Scope Rings Six screw ring caps for ultra secure optic mounting Mill spec 30 micron hard anodised finish One hit machining to ensure repeatability Built in anti-cant bubble Supplied in hard plastic case complete with Torx bits Package Contents: Tier One Tactical Scope Rings Nil Tier One T1TAC30L: Tactical Rings - 30mm Low Black