Secure Up/Down Stair: Pipe diameter: 1.26/ 32 mm; Pipe thickness: 0.06/ 1.5 mm; Amount: 1 handrail; Total length: 2 FT/ 0.6 m. The heavy-duty pipe stair handrail can support 440lbs/ 200 kg loading each bracket. Therefore, it can be used as a grab bar for up and downstairs, especially for children, the elderly, pregnant women, and people who have difficulty climbing stairs. Industrial-Style Design: The staircase handrail is designed with a unique industrial style. It is made of strong-hardness carbon steel to keep away from deformation and scratch. Matte black finish (with 100m outdoor-dedicated spray paints on the industrial pipe handrail surface) withstands the elements year after year and won't rust, corrosion in all seasons and climates. Effortless to Install: Pre-hole diameter: 0.23/ 6 mm; Standing out from wall width: 3.74/ 95 mm. The wall handrailings for stairs are fast to install by threading each part and installing the wall