Westbury Black Tuscany C10 Stair Swivel Brackets, 4-Pack are designed to accommodate stair angles ranging from 0 to 42 degrees, making them versatile for various stair configurations. This set includes four pieces: two black top mounts and two black bottom mounts, complete with screws for easy installation. Crafted to provide sturdy support and a sleek appearance, these brackets are an i choice for enhancing the safety and style of your stair railing system. Model Number: 170070TBK