2x4 Mounting Brackets for Wood Railing

Sold in two-packs, with screws. 

Stair packs come with a top-of-stair bracket and bottom-of-stair bracket. 

Brackets CANNOT be installed after the 2x4 is in place. They must be screwed into the end of the top rail, then held in place while screws are driven through the bracket into the post.