Precision Archery provides these Lens Reticle Reducers for Axcel series scopes. Reticle reducers decrease the size of the field of view through the scope lens to help sharpen the shooter's focus on the target. Precision Archery's reticle reducers have a frosted finish, which visually gives the appearance similar to etched glass. The frosted finish helps to alleviate eye strain. These retical reducers are black, and are available in two different sizes including: Small 1-3/8" Outside Diameter (34.93 mm) 3/4" Inside Diameter (19.05 mm) Large 1-3/4" Outside Diameter (44.45 mm) 1" Inside Diameter (25.4 mm) Sold per package of two lens reticle reducers.