1.25-Inch Telescope Accessory Kit (silver)- 5pcs Plossl Eyepiece Set, 7pcs Filter Set, 2x Barlow Lens - Astronomy The 1.25" Eyepiece and Filter Kit is a great starting kit for anyone getting their first instrument or for anyone looking for a good accessories base on which to build on. The astute astronomer will recognise the terrific value offered in this kit: the eyepieces range is better suited to the average astronomer than similar eyepieces and filters kits from other (famous) brands: indeed the selection of focal lenghts delivers increased versatility by reducing the low focal lenghts eyepieces. The low focal lentghs eyepieces are often promoted as a good option delivering high magnifications: if it is true the magnification is higher, it is always at the cost of image quality and sharpness and in practice simply less useful and enjoyable. The kit includes in the aluminium, foam-lined, carry case the following: Eyepieces: 40 mm Plossl Eyepiece 20 mm Plossl Eyepiece 12.5mm Plossl Eyepiece 8 mm Plossl Eyepiece 6mm Plossl Eyepiece Specifications: Fully multi-coated/ 4 element optical design / 52 degrees field of view / Filter thread /Standard 1.25" barrel 2X Barlow Lens - 1.25": Specifications: Doubles the magnification of any eyepieces, effectively increasing the range of available magnifications Filters: #82A Blue Filter #56 Light Green Filter #23 Red Filter #21 Orange Filter #12 Yellow Filter - Moon Filter Polarizing Filter(Single) Specifications: Help bring out certain details on the planets - Moon filter helps reduce the negative effects of glare for a more detailed and comfortable observation 1.25” filter threads on the filters.