A notepad system includes a piece of generally flat backing material, and a plurality of generally rectangular notepads removably mounted to the piece of backing material. The system utilizes mounting supports that hold solar panels at an inclined angle. The sealant is presented as a multi-component liquid sealant, with each component contained in a cartridge comprising a tubular body closed at one end with a pierceable seal and closed at the other end by a piston element movable axially within the tubular body. A portion of the cable may be inserted through a narrow portion of the insert and secured within a slot of the insert. The shaft member extends in axial relation from the center of the head member. The molds have substantially planar working faces into which recesses are formed.