Barlow Lens 2x #126 Short Focus

#126 2x Barlow Lens: An amplifying lens, the multi-coated #126 2x Barlow (arrow) doubles the powers of all eyepieces with which it is used. Insert the Barlow into the telescope's eyepiece holder first, followed by an eyepiece. The #126 is intended for astronomical applications. Use with any ETX model.