Horizontal, Quick Brace, A Patented System Of Quick & Easy Fence Bracing, Will Fit 6" Or 8" Wood Vertical Posts & 2" To 4" Horizontal Posts Or Pipes, Constructed Of High Density Poly Ethylene & Is UV Protected For A Lifetime Of Service, May Be Set Up By Hand In Less Than 15 Minutes, As There Is No Hand Drilling Or Notching Required, Excellent For New Construction Or Repairs, No Cutting Into Or Notching Your Posts Required, Increase Post Life, Simply Nail Or Screw To Post.