Assortments of holesaws composed of popular sizes for the engineering industry, water and sanitation industry and electric installation industry. 13-Piece Kit contains:  9 holesaws (3/4, 7/8, 1-1/8, 1-3/8, 1-1/2, 1-3/4, 2, 2-1/4, 2-1/2, ), 3 arbors and 1 pilot drill.