The 1/4" verifier kit comes with a dual hex wrench and a reducer that converts it to a 3/16” opening. The reducer accepts optional 1/8" apertures, 1/8" clarifiers, and the 1/8" verifiers. Shoot indoors or on the 3-D range with the same setup, and be deadly accurate from a blind or tree-stand. This peep is the most versatile peep on the market. Includes 1/4" non-hooded Ball Peep, Reducer, choice of #4, #5, #6, #7, #8, or #9 Verifier, and Dual Wrench. We recommend Lens Brite Anti Fog Lens Cleaner (Part 641) and Lens Cleaning Swab (Part 501) for cleaning the lenses.