Blade head material: high-speed steel, the specific steel grade is not convenient to disclose. If the blade is blunt, it can be polished. You can ask the customer service for a video, or you can send it back for polishing at your own expense. Suitable for 4.5-6mm thick vegetable tanned leather. The blade model be increased later to adapt to more thicknesses. Please bring your own G clamp for use. When using it, the width of the feed port should be 1-2mm narrower than the strip for better results. This means that the width of the finished product be slightly narrower than the strip, please pay special attention. Be prepared for debugging after buying it back. The product is already very useful, but it also requires practice makes perfect, which means you may waste some strips. Those who are nitpicking and fussy, please be generous and don' make each other unhappy. Note: the physical slightly color difference or difference, does not affect the use of Colour:Silver Material:Metal Package Contents: 1x Leather Skiving Tool 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.