Handrails are long elements used to decorate the top of a handrail; the handrail is the upper part of the hand that touches the hand when climbing stairs or standing on a balcony.
Profiles are the various decorative profiles that form the base of a handrail, fence or similar. They are used to form a frame or other structure, which is then filled with other decorative elements (bars, rosettes, volutes).
Staples are small decorative workpieces designed to conceal the welding point.