This 1" X-High mount extension features Weaver-style rings with detachable tops in a durable black matte finish designed to provide ideal eye relief and flexible scope positioning.1" X-High Weaver Style Mount Extension with Detachable TopBlack matte finish for reduced glare and professional appearanceSteel and alloy construction for durability and reliabilityAllows forward or rearward scope positioning for optimal eye reliefDetachable top rings for easy scope installation and removalDimensions: 1.25" x 4.70" x 5.60"Perfect for shooters who need to adjust their scope position for comfortable shooting stance and proper eye relief this mount extension provides the flexibility to optimize your optic setup.