Narex 10 mm 3/8" Round Cabinetmaker Wood Rat Tail Coarse Cut Rasp 872513 Made by a highly respected tool manufacturer in the Czech Republic and is of exceptional quality Blade is 10 mm (3/8) in diameter and 250 mm (10") long. Overall length is 395 mm (16") Coarse cut pattern with 12 tenth 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