Milking Stick

The Steel Milking Stick is exactly what it sounds like; a device used to induce the release of semen. While it may sound like it's designed to produce pleasurable sensations, it's actually designed to help keep a male slave under the control of his Dominatrix. This hardcore fetish toy is quite beautiful; a 9.5" or 12" steel shaft with a rounded spade-shaped edge over 1 1/4" in diameter.
The tapered tip makes this wand easier to insert with generous lubrication too. The bulb on the shaft is a good indicator of how far the milking stick should be inserted and the balance of the shaft is perfect for getting a grip on your play.
A male involved in chastity still needs to maintain good prostate health, but that doesn't mean his Domme wants him to get any pleasure out of it.
Inserting a wand of this nature anally will trigger the release of semen, and it can be done without orgasm taking place, keeping your male slave not only chaste but healthy with a greatly decreased risk of prostate problems.
Minimum pressure must be used, and using unreasonable vigor may result in damage to the very sensitive soft tissues and nerves of which it is made.
Prostate massage has long been used as a means of maintaining prostate health and to promote increased virility 

Stainless steel, overall length: S - approximately 24 cm (9 1/2 inch), L - ~30 cm (12 inch), diameter 12 to 30 mm.