Ravin Level for Scope. Mounts quickly and easily to the riser archway for clear viewing. Does NOT work with the R26/R29 Crossbows Specifications for Ravin Scope Level: Manufacturer: Ravin Color: Black Weight: 0.05 lb Features of Ravin Scope Level Ensure that your Ravin is perfectly level for precise long-range shooting Mounts quickly and easily to the riser archway for clear viewing. Package Contents: Ravin Scope Level Ravin R172: Level for Scope