2-element 2x ED Barrow lens / Fully multi-coated / 50.8mm (2 inch) diameter ■φ31.7mm eyepiece adapter included / Front and rear caps included ■Eyepiece adapter is a brass ring tightening type ■Remove the tip of the lens and use it alone Possible (M48 standard) ■Reliable official direct product from GSO's general distributor in Japan, Kasai Trading Co., Ltd. ■Fully multi-coated 2-element ED large barrow lens. Because it is a short type, it can also be used with a 2-inch zenith mirror. In addition to being used as a regular 2 inch 2x barrow, if you remove the lens at the tip, you can attach it to an M48 filter screw, so you can use it by screwing it into the barrel tip of a zenith mirror, or use it with an M48 large T ring or M48/T2 adapter + T ring. It can be used for a variety of pur.