Narex 12 mm 1/2" Round Cabinetmaker Wood Rat Tail Coarse Cut Rasp 872514 Made by a highly respected tool manufacturer in the Czech Republic and is of exceptional quality Blade is 12 mm (1/2) in diameter and 300 mm (12") long. Overall length is 445 mm (18") Coarse cut pattern with 10 teeth per square centimeter The blade is made from tool steel and then hardened to RC 45 Blades are CNC stitched which produces a uniform tooth pattern for even stock removal