Ease of use: The guide tool kit offers a versatile sharpener along with a range of measuring tools, providing a complete solution for sharpening and measuring tools. Two-roller design: The chisel grinding kit includes two short and two long rollers to ensure the stability of the chisel edges and consistent grinding at right angles on the grinding stone. This maintains the stability and accuracy of the chisel on the sharpener when grinding different sizes of chisels, thus helping to improve the precision and quality of the sharpening. Angle sharpening support: The sharpener can help you achieve standard chisel and flat surface angles with an angle support of 15/20/25/30/35/40/45 degrees and 17/22/27/32/37/42 degrees. If you don't know the angle of the chisel or surface, you can easily check it with a compass. Wide sharpening range: This chisel honing guide can clamp chisels and flat surfaces from 5/32" to 3" (0.39 to 7.62 cm). It is easy to lock and use and fits most common wood chisel sizes in your workshop. High-quality metal materials: This sharpening guide clamp is made of high-quality aluminum alloy, brass, and stainless steel, making it durable and wear-resistant. It features a storage compartment for easy storage of sharpening guides and tool transport.