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This compact set replaces 10 individual drill bits.
CUTS AND DEBURRS: Cuts through steel, sheet metal and other surfaces with only a small pressure.
It's ideal for drilling in steel, copper, stainless steel, plastic, aluminum and other thin materials. Walking and center punch are not necessary. Includes step sizes: 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, 1, 1-1/8, 1-1/4, 1-3/8-inch,saves your precious working time to do perfect job.