The Hillman Group 44001 10-32 x 3/4-Inch Button Socket Cap Screw, Stainless Steel, 15-Pack
RENOGY® Branch Connectors Solar MC4 Connectors Y connector in Pair MMF+FFM
25 1/4" - 20 Rubber Well Nuts For 1/2" Hole GM #528846
RENOGY MC4 Assembly Tool
Renogy 100 Watts 12 Volts Monocrystalline Solar Starter Kit