ITEM NAME:1Pcs Tongue Groove Router Bit 1-1/2" 1/4" Shank T-type Useful Cutter For Cabinet Descriptio n Specification: Material: Alloys Brand new Body Material: Solid Hardened Steel Blade Material: Industrial grade micro grain car.It can be used for the production of cabinet doors, closet door. Shank Size:1/4"(6.35mm). Shank Length: 32mm. Blade Depth: 4mm. Body Material: Solid Hardened Steel. We'd like to settle any problem in a friendly manner.