uxcell 18mm Drilling Dia 1/2" Straight Shank Twist Drill Bit Item Name : Twist Drill Bit;Type : 1/2'' Diameter Straight Shank;Drilling Diameter : 18mm/0.71" Flute Length : 75mm/2.95'';Shank Length : 55mm/2.17'' Shank Diameter : 12.7mm/0.5'';Total Length : 146mm/5.75" Material : HSS;Color : As Picture Show Net Weight : 164g;Package Content : 1 x Twist Drill Bit