Woodworker 1/4 Inch x 1/8 Inch Straight Shank Slot Undercut Router Bit Product Name : T SlotRouter Bit;Standard : 1/4" x 1/8";ShankDia. : 6mm / 1/4" Cutting Depth : 3.1mm/1/8";Cutting Width : 8mm / 5/16" Cutting Diameter(Overall) : 31mm / 1.2";Total Length : 40mm /1.6" Color : Silver Tone, Blue;Material : Metal Weight : 16g;Package Content : 1 x TSlot Router Bit