Features Material: made of steel, high strength and hardness. Anti-rust, with high processing efficiency. Rigidity, wear resistance, resistance to demolition damage. 2 TWILL DIRECTION ROLLERS: One is positive and the other is negative. The mechanical processing metal button or any other work to the appearance of a rolling pattern for a non-slip. Comes with fine and coarse diamond wheels. USEFUL: Double wheel, slanted teeth pattern. The knurling tool is ideal for replacing your damaged knurling tool. Used to process the pattern of the surfaces of the room. USEFUL: Black (knurling) + Brown (wheel); Wheel size: approx. 0.5mm, 1mm, 2mm Package included: includes 1 knurling and 6 knurled wheels (2 pieces for each 0.5/1/2mm) Features: 1. Two twill rolls: one is positive and the other is negative. 2.Comes with fine, medium and coarse diamond wheels. 3. The mechanical process metal button or other work to the appearance of rolling pattern for anti-slip. 4.Stiffness, wear resistance, anti-demolition damage resistance. 5.Anti-rust, high processing efficiency. 6.High strength and hardness. 7.Durable in use. 8.Used to process the pattern on the surface of the workpiece 9. Ideal replacement for your damaged linear knurled wheel. Specification: Colour: black (knurling) + brown (wheel) Dial figure: approx. 0.5mm, 1mm, 2mm Wheel diameter: approx. 20 mm. 0.5mm Diagonal Linear Knurling Wheel Knurling pitch: 0.5 mm Pulley net diameter: about 26mm Hole diameter: approx. 10 mm. Wheel thickness: about 8 mm 1.0mm Diagonal Linear Knurling Wheel Knurling pitch: 1 mm Outer diameter of knurled wheel: about 26mm Hole diameter: approx. 10 mm. Wheel thickness: about 8 mm 2.0mm Diagonal Linear Knurling Wheel Clamping Pitch: 2 mm Outer diameter of the wheel: approx. 26 mm. Hole diameter: approx. 10 mm Wheel thickness: approx. 8 mm Total size: 25*8mm/1*0.3in (outer diameter * thickness) Weight: about 545g/19.2oz. Package list: 1 x Knurling 6 x wheel Package List