The delicately shaped Aneros Eupho has a small head and stem which combine for explosive pleasure. The Aneros Eupho offers an enticing, appealing shape that tingles and coaxes you slowly to new sensations and uncharted territory. A man experienced with our other models and/or with stronger PC sphincter muscle will be able to exact precise control over the Eupho, causing it to dance all around the prostate for a variety of subtle to sublime sensations. The gentle curves and ergonomic design allow for gradual build-up of physical sensation to lead you to the next level. Fun to manipulate gently, but probably best reserved for advanced and experienced users who have developed their technique. Aneros Eupho Prostate Massage features: most delicate, agile and advanced model. Thin stem requires strong PC sphincter muscles. Great for prostate health. Dime perineum tab. Polished to hold lubricant for better movement. Specifications: 3/4 inch diameter at tip, circumference 2.355 inches, 15/16 inch diameter at mid-ridge, circumference 2.94 inches, 1 3/4 inches from main body to perineum pressure point. Made in the USA.