Celestron Set of Four 1.25" Eyepieces 6mm 8mm 12mm 20mm Set of four 1.25" eyepieces: 6mm, 8mm, 12.5mm, and 20mm Four eyepieces for less than $40! What a great price! Eyepieces fit any brand and type of telescope that has a 1.25" focuser Threaded barrels accept 1-1/4" Celestron thread-in filters Anodized aluminum barrels