Lenox® - 30843, 3/8 in, Shank, 10 in L, For Use With 5L, 6L or 7L Hole Saws, Carbon Steel, Black Oxide

Milwaukee® - MX4™ Carbide Tipped Bit, 1/4 in, 8 in L

Milwaukee® - MX4™ Carbide Tipped Bit, 3/8 in, 6 in L

Milwaukee® - MX4™ Carbide Tipped Bit, 3/16 in, 8 in L

Milwaukee® - MX4™ Carbide Tipped Bit, 1/2 in, 6 in L