Sky Mentor 3x Barlow with T-threads - 1.25" - SKYM-007 36mm filters About the Explore Scientific 50mm

About the Explore Scientific 50mm Finderscope Rings - Standard Height

It is very easy to attach to any telescope tube

About the Baader Red 610nm Long-Pass Filter - Round Mounted

Fork Arm: Dual fork arm

Sky Mentor 3x Barlow with T-threads - 1.25" - SKYM-007 36mm filters About the Explore Scientific 50mmSky Mentor 3x Barlow with T Threads 1. 25" Barlow Lens 1. 25" 3x Increase of Nominal Focal Length Accepts 1. 25" Eyepieces and Accessories Fully Multicoated Conventional Barlow Lens Functionality Sky Mentor Barlows will extend the focal length of your telescope for greater magnification. By generating negative spherical aberration they correct that generated by positive eyepieces and they also will increase eye relief.