QUALITY DESIGN: Stair deck railing bracket connector fit standard 2"x4" (Actually 1.5"x3.5") Wood deck railing, Can be installed in the 35 ° oblique angle of the deck railing stairs, concealed stair railing bracket closely fit with the wooden Post connection, Beautiful and Solid STURDY MATERIAL: Stair deck railing connector is made of high strength 201 Stainless Steel (Thickness/0.08"), High temperature black powder coating treatment, Waterproof, Rust-proof, Can resist the erosion of wind and rain and high temperature in all seasons APPLICATIONS: Concealed Stair Deck railing bracket can be used indoors and outdoors and can be installed on Deck railings Stair, Fences, Barns and Beam ends; Kit includes all Bracket pieces and Screws for immediate installation SIZE SPECIFICATION: Upper: L1.8" x W1.57" x H5.4", Qty: 4pairs (4 Pcs for Upper/Lower), Screws(L 1.58") /24pack, (S 0.78") /32pack INSTALLATION STEPS: 1. Install the bracket in the pre-installation position of the Post and lock in the long screws; Slide the ends of the handrail (Both ends need to be built and polished according to the installation tilt angle) into the joist, And then lock in the short screws on each side, Complete the installation Notice: The 201 stainless steel is strong and durable, so you don't have to worry about it being attacked by rain or heat. The actual size of the installation is 1.5"x3.5", Due to the dryness and wetness of the wood, the wood may need to be sanded to match the bracket size during the installation.