Features: * Sleeve is made of plastic material, light weight and no rust * Lens material: optical glass, FMC multi-layer broadband coating(green film), which can eliminate chromatic aberration to a greater extent, make the image clearer and brighter, and the color reproduction is higher * Equipped with dust cover to better protect the product from scratches and damage * Suitable for Barlow Lens With 1.25inch interface Specifications: *Product Name: Astronomical Telescope Magnifier *Material: Plastic+ Glass *Size: approx. Length: 80mm Interface: 31.7mm/1.25inch *Color: Black *Weight: about 30g *Magnification: 3 Times Package Content: 1 x Magnifier Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data(1cm=0.39inch) Features: Enhanced Color Reproduction Telescope Magnifier 1 25inch For Barlow Lens 3x Material: light weight, good strength and well temperature resistance, good impact resistance Appearance and performance: automatic cutting, smooth edge, fit most of the road bicycles, delicate texture. Compatibility: smooth surface and exquisite workmanship, fit most of the bicycles. Easy Installation: Brand new and high quality, easy to install.