The MEC125-4PV-C 4-wire metal edge clip is made of stainless steel. It can be installed on a Panel thickness ranging from 0.051" to .125" (1.3mm to 3.2mm) and can accommodate up to 4 wires with a diameter range of .200" to .295" (5.1mm to 7.5mm). Use when cable orientation is parallel to the outer edge of the panel.