3" Handrail brackets made from zine alloy, satin nickel finish,durable,sturdiness and long-lasting use. Easy to installation ,handrail brackets are design to adjust to any stairway angle,great for indoor or outdoor use. Handrail bracket supports up to 330 lbs per bracket, and safely carry weight 100 lbs per stair bracket, meets ANSI/BHMA A156 grade 2. Maximum distance between brackets not to exceed 48 in. Including 3 Pack handrail brackets and mounting screws hardware. HOME MASTER HARDWARE Handrail Stair Brackets Heavy Duty Shelf Brackets Support Hardware for Stairways, Home or Office Staircase Hand Railing