The sloted angles holes and slots are perfectly positioned for bolting pieces together at various angles without needing to drill holes. Cutter is recommended to completely cut throught with one easy stroke. Orders include 75 count box of 5/16" X 5/8" hex cap screws with nuts. Slotted angle is 100 percent reusable, even short pieces of angle can be used as a cleat to join together angle lengths into longer ones. 14 Gauge is recommended for average jobs, but if you are looking for something that can give a greater carrying capacity 12 gauge is the way to go.