The Blair Equipment Rotabroach Sheet Metal Hole Cutter Combo Kit, No. 11320, combines two of the company's most popular kits into one convenient package. The set includes 13 sizes of Rotabroach Cutters from 5/16” to 1-1/2”. The sheet metal cutters can drill holes in materials up to 1/4” or 1/2” thick, depending on diameter. They can be used in all types of automotive and metal fabrication, maintenance and electrical applications, spotweld removal and plug holes for welding. The kit comes in a sturdy plastic storage case and includes two arbor assemblies, extra pilots, center punch, washers and instructions on use. Made in the U.S.A.