1.25" Plossl Eyepiece 4-Element 3.6mm to 40mm Astronomical Telescope Accessories

Focal Distance: 3.6mm / 4mm / 6mm / 6.3mm/ 6.5mm / 8mm / 10mm / 12mm / 12.5mm / 17mm / 20mm / 25mm / 32mm / 40mm. Body Material: Aluminium Alloy. Lens Material: Optical glass.

eBay