Woodworker Tool 6 x 10mm Double Flutes Core Box Router Bit Product Name : Cove Box Router Bit;Shank Diameter : 6mm / 1/4" Cuttting Diameter : 10mm / 3/8";Total Length : 56mm /2.2&#39;&#39; Material : Metal;Color : Silver Tone, Green Weight : 17g Package Content : 1 x Cove Box Router Bit