Product Details ①. Brass roller with locking ring ensures stable sharpening without slipping, maintaining consistent direction for smooth and safe use ②. Adjustable clamping width via nut rotation, accommodating various tool sizes for versatile sharpening needs ③. Constructed with stainless steel for enhanced durability and resistance to rust, suitable for long-term use ④. Fixed angle design simplifies the sharpening process, providing convenience and precision during operation Specification ①. Material: Stainless steel + brass ②. Clamp width range: 8mm to 82mm (0.31in to 3.23in) ③. Product weight: 270g (9.52oz) ④. Product size: 9.7 x 4 x 4cm (3.82 x 1.57 x 1.57in) ⑤. Maximum flat clamping width: 82mm (3.23in) ⑥. Maximum forging clamping width: 58mm (2.28in) Package Includes ①. 3 x Chisel sharpening guide ②. 1 x User manual Warm Tips ①. Turn the nut counterclockwise to attach tools and adjust the angle before tightening clockwise to secure the blade ②. Rub the knife back and forth on the grinding wheel or sharpener until the tool becomes sharp and precise ③. Suitable for sharpening wood chisels, planes, blades, carving knives, irons, and flat chisels ④. Keep the product dry and clean after use for better maintenance