This #50 Sharpening Bar Will Handle Just About Anything! Measures 6" x 2" x 1". Whenever You Need A Sharper Blade On Your Hatchet, Axe, Knives, Machete, Garden Tools, Etc., This Sharpening Stone Will Do The Job. Both Sides Have Different Surface Grits.* 6" Length * 2 Different Grits - 120 and 240 grit * Ideal size for bench work *Made of aluminum oxide * Excellent Quality