Newly Designed Knife Sharpener - This knife sharpener can fix and adjust the angle at which the chisel edge contacts the whetstone, so that the entire knife edge can be evenly sharpened. Attached Roller: The bottom widened roller allows you to sharpen the chisel by simply rolling it back and forth, easier and smoother. COMPATIBLE WITH MOST KNIFE - You can secure chisel and planer blades with an adjustment knob that covers commonly used sizes. It is locked by metal studs, it will not drop the knife even if it is tipped over. Aluminum alloy material - enough to support the weight of most chisels, wear-resistant, anti-corrosion and durable. Material: Aluminium alloy colour: red Package Contents: 1 x Knife Sharpening fixed Angle Frame Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.