Rotation bearing can be adjustable to change the length of the tool adapt to your requirement The main body of the tool is sturdy and rustless which is made by stainless steel Short and small carving tool can be applied flexible in your hand Equiped with sharp cutting head, then you can cut the leather freely The sharp rotary knife is convenient for leathercraft carving Specifications Product weight: 46g Product Specifications: 80mm long when not stretched, 95mm when the longest adjustment, 13mm diameter rod, 9mm wide blade, 25mm wide finger rest, 45*13mm wrench Product material: alloy steel Color: silver Product use: hand-sewn cow leather leather DIY tools, special edge leather processing tools Package includes: 1pc * carving knife Rotary carving knife maintenance methods: metal material knife not in use can be coated with machine oil protection to avoid rusting. Use when the blade is not smooth and sharp usually use the sharpening plate, sharpening cream grinding can extend the service life of the knife. Generally do not use oil to sharpen the blade, unless you need to grind out the angle of the blade to use the oil stone to sharpen the knife.