The Twister Glider system by Artiteq is the most logical, professional, and user-friendly way to hook the hanging wire into the rail. The Twister supports up to 20kg weight (steel wire option) or 10kg (perlon). The hanging cord is simply inserted and moved anywhere along the rail. Hang a picture in one place and slide it along to another the next day to create a new, simple, hassle-free look. Can support several pictures one above the other.