Manufactured of zinc die-cast. Secures wooded handrail to wall stud or other structurally sound surface. One piece single screw design for quick and easy installation. LifeSpan Limited Lifetime Warranty. Meets ANSI/BHMA A156.16 Grade 1. Manufactured of zinc die-cast. Secures wooded handrail to wall stud or other structurally sound surface. One piece single screw design for quick and easy installation. LifeSpan Limited Lifetime Warranty. Meets ANSI/BHMA A156.16 Grade 1.