My black dildo is 32/7 cm working part. The plug is 82 mm in diameter. I pump the ball inside to 15 cm and push it out. And there is also a 1 meter toy. I also insert it completely. (All this is in my videos) And my wife drives her hand up to the shoulder into my pussy. I use ultrasound gel as a lubricant. It is very slippery, costs pennies and does not leave greasy marks.