Explore Scientific 3x 2 in. Focal Extender FE03-020. 0-inch O.D. Barrel; 1.25" Eyepiece Adapter; Fully EMD-Coated on all air-to-air lens surfaces with all lens elements edge-blackened Package Contents: Explore Scientific Focal Extender 3x 2 in. 3x...
Explore Scientific 3x 2 in. Focal Extender FE03-020. 0-inch O.D. Barrel; 1.25" Eyepiece Adapter; Fully EMD-Coated on all air-to-air lens surfaces with all lens elements edge-blackened Package Contents: Explore Scientific Focal Extender 3x 2 in. 3x...