Bowfinger 20/20 Scope Filter Kit 30mm Assorted. The Filter Kit allows you to see your pin better on bright targets and any difficult lighting situation you may encounter. The Filter Kit comes with two filters; one gray and one amber filter and is compatible with all 20/20 Scope accessories. Package Contents: Bowfinger 20/20 Scope Filter Kit Bowfinger 30FK: 20/20 Scope Filter Kit 30mm Assorted