JET® Replacement Knife, For Use with: Model JJ-6CSX 6 in Woodworking Jointer, Specifications: 62 to 64 Rockwell Hardness, HSS, 6-1/8 in L x 0.4 in Thick JET® 708801 Replacement Knife, For Use with Model JJ-6CSX 6 in Woodworking Jointer, 62 to 64 Rockwell Hardness, HSS