Shelf Angle Bracket Kit. The brackets are made of 1/8 inch stainless steel. Each one needs a total of 6 screws. The kit also includes ½" screws, which are enough to attach all the brackets. The screws have flat cross recesses. I like the heavy construction of these braces. The steel is thick and strong, the holes are well drilled. The screws also work perfectly. Overall, this is a good choice for shelf brackets.