Heavy Duty Carbon Steel: Made from premium carbon steel, these adjustable handrail brackets provide exceptional strength, making them suitable for long-term use in any setting. Enhanced Stability with Three-Hole Base: The three-hole base ensures superior stability compared to traditional two-hole stair railing brackets, offering a secure wall attachment suitable for frequently used spaces. Adjustable Design: These swivel handrail brackets feature adjustable angles, fitting various staircases, handrails, and ramps. Ideal for residential and commercial projects, they provide flexible solutions for diverse railing needs. Multi- Compatibility: Compatible with drywall, wood, concrete, and stone walls, these wall mounted brackets suit staircases, corridors, offices, and spaces. The sleek black finish blends effortlessly with various interior designs. Simple Installation: Each 4-pack includes pre-drilled holes and screws for quick and easy installation. The well-thought-out design allows for easy setup, saving time and effort on any project., Weight: 1.79897205792 Pounds, Manufacturer: rirue