This physically very short (2.5") Barlow was designed to use with Meade ETX Maksutov-Cassegrains, but it can be used in the 1.25" star diagonal of any telescope for true 2x magnification . . .
For high power with a short focal length refractor or reflector, this Meade four-element 5x image amplifier (Barlow) is hard to beat. It quintuples the power of any eyepiece used with it, with essentially no color fringing . . .
Whether you have 2” eyepieces or 1.25”, this Meade 2” image amplifier and 1.25” adapter will double their power in a 2" focuser with a flat field of view and essentially no color fringing . . .