The original LensPen is the ultimate photography tool. Perfect for cleaning camera lenses binocular lenses small aperture spotting scopes and telescopes eyepieces and other optical items. Comes with a handy retractable dust removal brush and a special non liquid cleaning element designed to never dry out. Safe and very easy to use. Full size LensPen 11cm long with a round cleaning tip measuring 12mm in diameter Cleaning tip is slightly concave to match the convex lens Carbon cleaning technology.