uxcell Woodwork 1/4" x 1" Dual Flute Metal Core Box Router Bit Dark Gray Product Name : Core Box Router Bit;Material : Metal Standard : 1/4" x 1";Shank Diameter : 6.3mm / 1/4" Cutting Diameter : 25.5mm / 1";Cutting Depth : 15mm / 3/5" Overall Length : 47mm / 1.85";Color : Silver Tone, Dark Gray Weight : 34g;Package Content : 1 x Core Box Router Bit