1.25" WA eyepiece

Focal length:6mm 9mm 15mm 20mm

AFOV: 66 degree

13-17mm eye relief

Remark:These high quality economical eyepieces feature a generous 66 degree field of view with superior sharpness across the field when compared with less expensive eyepieces. 5 element design. All air to glass surfaces have a multi-layer coating for superior contrast and light transmission.  Straight-up eyecup. Insert tube has safety groove and is threaded for filters.