This special Vixen Plossl Eyepiece Package is certainly their best eyepiece deal going-you get three great NPL 1.25" Plossls along with a handy fanny pack to carry all three upon your waist without fumbling around for them in the darkness of the field.
The combination of 40mm, 15mm, and 10mm focal lengths gives you three magnifications well spaced for most applications, and you can double that to six available magnifications with the addition of a Vixen 2x Barlow Lens DX.
Plossl eyepieces are known for having an easily-viewed, comfortable field of view with a uniform sharpness across their entire range. These are 4-element, 2-group formulas with good color correction. The 10mm and 15mm have a 50° apparent field of view, while the 40mm Plossl has a 40° apparent field.
All three Plossls accept conventional 1.25" astronomical eyepiece filters.
Three great 1.25" Plossl eyepieces in a single economical kit
Helicoid-type eyecup upon 40mm NPL eyepiece
All eyepieces work with optional Vixen #3674 Barlow Lens DX