William Optics 1.25" 45-deg Erecting Prism Diagonal

William Optics new 45 EP will work with any 1.25" eyepieces and most scopes with 1.25" eyepiece holders (Please note that diagonals cannot be used with Newtonian or Dobsonian reflector telescopes). It will turn upside down images right side-up and give correct left-to-right image. This high-quality, low-cost erecting prism will set the standard in erecting prisms! Large Prism Large, high-quality BAK4 erecting prism with anti-reflection coating allows for good contrasted and bright images. Brass compression ring. Great Price 1.25" eyepiece holder comes with anti-marring brass compression ring. Extremely competitive price/quality ratio. Innovative Shape Entirely aluminum, black anodized eyepiece holder. Large, chromed thumbscrews. Advanced Craftsmanship Internally matte blackened and threaded for no internal stray light reflection. Features: Prism: High quality BAK4 with anti-reflection coating Materials: Entirely machined aluminum Angle: 45 degree Prism clear aperture: 25mm; 1.25" with brass compression rings Weight: 6 oz