Adjustable solar panel mounting brackets designed for off-grid solar systems. Quick assembly with stainless steel fasteners and precise hole placement. Great addition for use on top of an RV or other flat surface. The 50-inch TMB bracket can be adapted to Renogy solar panels up to 550W or two 100W Renogy solar panels. Package Includes: Four (4) Fixed L-Brackets, Two (2) Tilt L-Brackets, Six (6) M8 Plastic Knob Screws, Six (6) M8 Wing Nuts, Four (4) M6 x 16mm Hex Cap Bolts, Four (4) M6 Split Lock Washers, Eight (8) M6 Flat Washers, Four (4) M6 Hexagonal Nuts, Six (6) M8 Washers, Six (6) M8 Spring Washers, Six (6) #10 x 1¼ in Self-Drilling Cap Screws, Six (6) Plastic Retaining Rings., Manufacturer: Renogy