Brass caster with retaining ring, open part: brass roller design, back and forth without restriction when sharpening, keeps the same direction, non-slip, smooth, and safe .Brass castor with retaining ring, open part. Make sure that the rollers are not offset when sharpening, they must always be centered. Adjustable clamping width: possibility of adjusting adjust the clamping width by turning the screw cap. Clamping width range: 8 to 100 mm. 82 mm. Maximum clamping width of the plane: 82 mm. Maximum clamping width of the chisel: 58 mm. Finely crafted; and resistant: made made of quality stainless steel superior, not easy to rust, durable and strong. Fixed angle, easy to adjust. to use. Turn the screw cap counterclockwise, attach the chisel or other tools, mount it and adjust the angle. Then tighten the screw caps clockwise, the edge of the blade is securely fixed on the grindstone or sharpener, rub the knife back and forth until it is flat. make your tool more precise and sharper. Widely used : adapted for sharpening a chisel wood, a plane, a blade, a chisel, a sharpening knife; carving, plane iron, flat chisel. It must be a great partner to help you carve. Have a scissor with a sharp blade. Saves you energy, but works perfectly. Features: Material: rials: Stainless steel + brass. Clamping width: 8 mm to 82 mm. Product weight:270 g. Item size:9.7 x 4 x 4 cm. Contents: 3 sharpening guides for chisel.