6″ x 6″, 18 gauge, galvanized half post & column bases, secure the bottom of posts or columns to concrete & are perfect for decks or patio covers, dual purpose post cap/base for light cap or base applications, provides a positive connection for a post to a wood deck, reduces the chance of the post splitting & eliminates nailing into end grain, zmax galvanization offers extra corrosion resistance for exterior & treated wood applications, install with 16d common nails or #10 x 1-1/2″ strong drive sd screws.