JET® Replacement Blade, 4-Sided Helical Head, For Use with: Model JJ-6HHBT 6 in Benchtop Jointer, Carbide Steel, 0.59 in L x 0.1 in Thick JET® 718601 4-Sided Helical Head Replacement Blade, For Use with Model JJ-6HHBT 6 in Benchtop Jointer, Carbide Steel