3X Barlow Lens with Standard interface: 1.25" microscope, filters, telescope eyepieces are all acceptable.
Telescope Accessory with Brass Compression Ring: Non-slip Rubber Grip Ring design protects the barlow mirror from accidentally slipping from your hands.
Non-slip 3X Barlow Lens :Non-slip Rubber Grip Ring design protects the barlow mirror from accidentally slipping from your hands.
Precisely CNC-machined Barlow Lens: Quality aluminum stock and black anodized body sturdy for a long term use.