Great set of LRGB Filters. Note that the focus needs to be adjusted during filter change to attain best focus. So you need to pair this with an EAF(auto focuser) or manually adjust focus all the time.
A superb eyepiece that came with my 10 inch GSO telescope, it gives you wonderful views of The Pleiades etc. and other night sky wonders, it is an excellent eyepiece in my opinion.