Product Name: Three Section Diamond Pencil Size Product Material: 304 + ABS black red single product 160g Product specifications 18.5 cm * 4 cm * 8 cm Fine grinding: smooth surface, eliminate small burrs on the blade Coarse grinding: Addly add the cutter of the knife to repair stripes on the blade Sharpening: Fapper the blade, suitable for blunt tools Note: pull to The back, do not push and pull back back because of the difference in knife material, blade angle, etc., like the wrong sharpening effect, It is recommended to continue to sharpen the knife and gradually increase the force to observe the effect (even one-way pulling more than a dozen times), and perform the first time on the blade the shaping treatment Will only be sharp until you have successful shaping, and it is not necessary to reshape in the future.