The SAP Verifier Tool w/#4, #5, #6, #7, #8, #9 Verifiers is a versatile tool designed to enhance the clarity of your sight picture. This tool comes with six different verifiers improves lens centration, eliminating rotational image shift and enhancing pin sharpness. Ideal for archers who need to see their pins more clearly, this verifier tool enhances the sharpness of the sight picture, making it easier to aim accurately. Specialty Archery Products SAP Verifier Tool w/#4, #5, #6, #7, #8, #9 Verifiers 753-20