High quality 2″ barlow lens with extra low dispersion (ED) optics to improve corrections and contrast over ordinary achromat optics. Lenses are fully coated and housed in a quality aluminium body with a rubber grip ring and blackened 2″ barrel to prevent internal reflections. The 2″ eyepiece holder and included 1.25″ adaptor are come with brass compression rings to securely hold eyepieces and protect the eyepiece barrel from scratches.