For all EL and SLC models (except 8 x 30 WB). Will double the magnification. Example: the booster converts the SLC 15x56 WB into a monocular telescope with 30x magnification. Easy to assemble. Simply unscrew one of the two twist-in eyecups and screw on booster.
not in stock - ready to ship within approx. 48 hours
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