Enjoy twice the magnification through your Swarovski binoculars with this 2x doubler eyepiece. Designed for all EL 32 and SLC binoculars (excepting the 8x30 WB), the doubler works simply: just unscrew one of the two twist-in eyecups and screw on the booster. Once attached, the doubler converts your binocular into a monocular telescope with a more powerful optic. For example, the doubler will convert an SLC 15x56 binocular into a monocular telescope with 30x magnification. The 2x doubler turns your Swarovski binocular into a monocular telescope with twice the magnification. The 2x doubler is an ideal choice for people who occasionally need an observation boost while birdwatching or attending sporting events. The device fits the following Swarovski binocular models: SLC 56, EL 32, SLC 50, and SLC 42.