1、The whole frame is made of high quality metal, rust resistant and more durable 2、Professional sharpening system helps to sharpen all kinds of kitchen knives, also can be used for scissor, peeler, greatly expanded application range than the conventional one 3、Comes with 4 different grit whetstones, easy and quick to change sharpening stone according to different grinding demand 4、Reasonable handle design is much safer and won't hurt your hands 5、Tighten the screw by hands to fix the knife and prevent it from moving away or shaking Description: This professional sharpening system is safe and easy to use. Full frame adopts premium stainless steel material, more durable and stable. It has adjustable wide sharpening blade angle. With 4 different grit whetstones to meet different grinding demand. Features: The whole frame is made of high quality metal, rust resistant and more durable. Professional sharpening system helps to sharpen all kinds of kitchen knives, also can be used for scissor, peeler, greatly expanded application range than the conventional one. Comes with 4 different grit whetstones, easy and quick to change sharpening stone according to different grinding demand. Reasonable handle design is much safer and won't hurt your hands. Tighten the screw by hands to fix the knife and prevent it from moving away or shaking. Specifications: Condition: 100% Brand New Material: Stainless Steel Color: as Shown in the Picture Whetstone Grit: 120#, 320#, 600#, 1500# Sharpening Blade Angle:  5~90° Frame Size: Length: approx. 40.4cm / 15.91in Base Width: approx. 6cm / 2.36in Height: approx. 16.3cm / 6.42in Weight: approx. 910g Package Included: 1 x Sharpening Frame 4 x Sharpening Stones Note: 1. Please allow 0-2cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.