Check the listing for details. Carson VM-12 VisorMag Clip-on, Flip-up, Visor Magnifying Glasses. Condition: New. Listed at 11.99 USD. The VM-12, VisorMag™ is a set of clip-on, flip-up magnifying glasses that attach to the brim of most caps and hats. Perfect for fly-tying and all fly-fishing needs. Complete with protective soft-pouch, its crystal clear acrylic lenses give you a sharp, distortion-free view that allows you to see even the finest details with ease. These magnifying glasses are 2x power equivalent to +4.00 diopter. Keep these clip-on magnifier lenses in your tackle box so you “always have them at the ready.”Magnification: 1.75x Diopter: +2.00 Magnification: 2x Diopter: +4.00Magnification: 2.25x Diopter: +5.00Weight: 0.9 oz Dimensions: 4.7" x 2.7" x 2.8" Accessories: Protective PouchVisit our eBay Store: Blue Wing Olive. Flat Rate Shipping! Only pay to ship on the first item from our eBay Store BWO FLY. Add additional items for NO ADDITIONAL SHIPPING charge.