Shrewd Optum Focus Ring Size:35mm/40mm Easily mounts to the outside

Easily mounts to the outside of your bow's plunger hole perpendicular to your arrow

With the vise locked with the tension spring

Precision Engineered: Balanced

Weighing only 11

the SPEC mods are available every 1/2” and adjust up and down 1/4”

Shrewd Optum Focus Ring Size:35mm/40mm Easily mounts to the outsideFocus Ring for Shrewd Optum Series Scopes The Focus Ring is a compact alternative to the standard Optum Ring System. It allows archers to thread a lens or sunshade into the Optum scope body, reducing overall length, weight, and complexity. Designed for archers who use a center drilled lenses or lenses with a reticle, the Focus Ring provides a secure fit while maintaining clear alignment within the scope. Weight: The 29mm Focus Ring weighs 0. 36 ounces