I have seen statements by a number of women that they had difficulty reaching their G-spot with their fingers.  It took a partner to reach in and get their fingers on the G-spot in a satisfactory manner. Well, he is a tool that will meet your requirements. It is names Njoy. This tool is made out of stainless steel and has some weight to it.  It is about 8 inches between the balls. I mentioned this tool to @CrissyP in our conversation and she purchased it from a relative that