Providing a complete range of roof brackets, Qualcraft offers fixed and adjustable roof brackets for all roof pitches and materials including slate. Durable, easy-to-install and remove and designed to protect all roof surfaces, Qualcraft is the only name you'll need to remember for professional roofing tools. Capacity is one worker plus forty pounds (40 Lbs.) per eight feet (8') staging. Maximum of eight feet (8') of spacing between brackets. It is used only as Slideguard or Material Support on low slope roofs strong.