SUNDELY (1 set Solar Panel Z Bracket Mount Mounting Set RV Boat Off Grid with Bolts Flat Washers Buts (1 set) Solar Panel Z Bracket Mount Mounting Set RV Boat Off Grid with Bolts Flat Washers Buts 4 pieces of anodized aluminum Z-Brackets 4 pieces of 1/4" diameter stainless steel bolts (1/2" long) 4 pieces of stainless steel flat washers 4 pieces of k-lock stainless steel nuts (will not vibrate loose)