3" x 6", 18 Gauge, Steel Double Post & Column Bases, Secure The Bottom Of Posts Or Columns To Concrete & Are Perfect For Decks Or Patio Covers, Allows For The Connection Of Two 2 x 2 To 4 x 4 Post Or Three 2 x 2's To A 6 x 6 Post, Double Shear Nailing Between Beam & Post Gives Added Strength, Provides Positive Connection For A Post To A Wood Deck, ZMAX Galvanized, Reduces The Chance Of The Post Splitting & Eliminates Nailing Into End Grain, Install With 16D Common Nails.