Features: 5X Magnification This 5X Barlow Lens 5X each 1.25" eyepiece at the expense of a single eyepiece. With M42x0.75 thread: with T (M42x0.75mm) male thread for T connectors, works as T adapter. Simply connects camera to the telescope via a separate (Adapter not included) Multi layer broadbands film glass lens: provides good quality observation without additional error Chromatically corrected; Provide high transmittance; for more clear views Aluminum and black organized body, precise machined; for long term use Dustproof Caps - Keep lens clear with 2pairs of dust covers With safe intercepts and brass compression, make sure the eyepiece bars are not damaged by the screw Specifications: Magnification: 5X lens Material: Optical glass Material: aluminum alloy Interfaces size: 1.25 inches (approximately 31.7mm) Photography thread: Support interfaces adapter ports withT2 (M42x0.75mm) thread and M35x1mm thread connection Anti slip : anti slip and anti jamming Appearance color: black Size:approx 6.5cmx3.17cm/2.56x1.25in Package Includes: 1PC Barlow Lens 2PCS Dust Cover note: Due to the problems of lighting effectsand shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.