Gold Tone 13mm Dia Diamond Profile Straight Router Bit for Marble Product Name : Diamond ProfileRouter Bit;Material : Diamond Shank Diameter : 12.7mm / 1/2";Cutting Diameter : 13mm / 1/2" Cutting Length : 40mm / 1.6";Overall Length : 75mm / 3" Color : Gold Tone;Weight : 76g Package Content : 1 x Diamond ProfileRouter Bit