- COMPATIBILITY: Too for use with Delta 4" 37-290 Walker Turner and Most 4" Planers
- W6 laminated high-speed steel construction blades stay sharper and last longer than conventional knife materials
- Blade material: M2/SKH51/W6Mo5Cr4V2
- Hardness: HRC 63-65°
- Size and Packed: 4"x19/32"x3/32",3pcs in a Plastic box