ITEM NAME:1.25 Inch 2X Barlow Lens Fully Multi-Coated Metal with M42X0.75 Thread Came B2M9 1.25 Inch 2X Barlow Lens Fully Multi-Coated Metal with M42X0.75 Thread Came B2M9 More magnification for the existing eyepieces to see more details of the moon and bands of Jupiter clearly;the Datyson1.25 inch 2x barlow lens is a better choice It's easy to use;simply insert the eyepiece of choice into the barlow lens then insert the barlow lens into the scope The barlow lens also could provide more magnification without reducing the exit hole on the eyepiece;it keeps a comfortable observation with wide view dust cover:Keeps lens clear easily with 2 pairs of dust cover Quality aluminum stock and black anodized body:Precision machined;sturdy for a long term use With an 3 elements APO design:Offer a high quality observation without introducing additional chromatic aberration Multilayer HD broadband green film optical glass lens:Chromatic corrected;provide high transmittance;ensure clear;sharp views With safety undercut and brass compression ring:Ensure the eyepiece barrels will not be marred by the captive set screw Diameter:1.25 inch /31.7mm Magnification factor:2x Lens material:pure optical glass lens Lens coating:FMC Thread interface:M42x0.75 pitch Length:2.9 inch/7.5cm Weight:3.14oz/89g Type:Monocular Colour:Black Material:aluminum alloy Package Contents: 1* Barlow lens 1* dust cap.Thread interface:M42x0.75 pitch. It's easy to use;simply insert the eyepiece of choice into the barlow lens then insert the barlow lens into the scope. 1 Barlow lens. With safety undercut and brass compression ring:Ensure the eyepiece barrels will not be marred by the captive set screw.
