Specialty Archery Stack It Peep Sight Black STK BLK. A range of string angle options allows proper fit across different bow configurations. Clarifiers and Verifiers sold separately. Specifications for Specialty Archery Stack It Peep Sight: Manufacturer: Specialty Archery Color: Black Features of Specialty Archery Stack It Peep Sight: Micro-adjustable peep system Includes peep housing only String angle options: 45 degree 37 degree 53 degree Modular component design Package Contents: Specialty Archery Stack It Peep Sight Specialty Archery STK BLK: Stack It Peep Sight Black