Bi-metal Hole Saw Assortments. These assortments include the most popular sizes of Hole Saws, with Arbors and Drills , for general purpose use, and come in a sturdy, durable plastic case that's compact and easy to handle, choose the assortment best-suited to your needs. Item NO. Shank Size Chuck Size Thread Size Fits to Hole Saws PT98002 1/4 Round 1/4 1/2-20 UNF 9/16-1 3/16 PT98003 3/8 Hex 3/8 1/2-20 UNF 9/16-1 3/16 PT98004 7/16 Hex 1/2 1/2-20 UNF 9/16-1 3/16 PT98007 7/16 Hex 1/2 5/8-18 UNF 1 1/4-8 PT98008 7/16 Hex 1/2 5/8-18 UNF 1 1/4-8 PT98009 3/8 Hex 3/8 5/8-18 UNF 1 1/4-8 PT98010 7/16 Hex 1/2 5/8-18 UNF 1 1/4-8 PT98011 5/8 Hex 3/4 5/8-18 UNF 1 1/4-8 PT98020 7/16 Hex 1/2 1/2 -20 UNF 9/16-1 3/16 PT98021 SDS plus SDS 1/2 -20 UNF 9/16-1 3/16 PT98022 SDS plus SDS 5/8-18 UNF 1 1/4-8 PT98023 7/16 Hex 1/2 5/8-18 UNF 1 1/4-8 PT98024 3/8 Hex 3/8 5/8-18 UNF 1 1/4-8 PT98025 7/16 Hex 1/2 5/8-18 UNF 1 1/4-8 PT98026 1/4 3 Flats 1/2 -20 UNF 9/16-1 3/16 PT98027 1/4 3 Flats 5/8-18 UNF 1 1/4-8