The handrail is a 5 star product! My only issue, and the cause of the 4 star rating, was the attachment screws. The supplied screws were too short to catch the 2x4 behind the sheet rock. I used this on an interior stairwell in my house. Of note, a day after I installed the handrail a contractor was in the house and tripped coming down the stairs he grabbed the handrail and caught himself. He thanked me for the handrail. It saved him from a 10 stair tumble.