True to its name, the Maximus is the largest prostate stimulator Aneros offers. Similar in shape to the MGX, the Maximus is intended for those looking for a "fuller" experience. It provides greater pressure throughout the rectum and is a little more difficult to insert due to its size. Although it is difficult to say exactly which model is best for any given individual, we would recommend this only for more experienced users who are seeking greater pressure. Specifications: 1 1/16�€� diameter at tip, circ. = 3.34�€� 1 1/8�€� diameter at mid-ridge, circ. = 3.53�€� 1 3/4�€� from main body to perineum pressure point Made in the USA.