The Sure Screen is a stainless steel mesh screen with multiple functions. It can be placed over the dip tube in a corny keg, allowing you to dry hop IN the keg without clogging or pouring hops at the faucet. It can also be slid onto the end of a racking cane, to avoid large sediment while siphoning (in fruit beers, dry hopped beers, etc.). Easily cleaned and sanitized by boiling. No clamps or other fittings necessary for use.