Features: Two rollers oblique direction: one is positive and the other is negative. Comes with fine, medium and coarse diamond knurls. Mechanical metal process knob or other work on the appearance of the rolling pattern for anti-slip. Rigidity, wear resistance, damage resistance. Anti-corrosion, high processing efficiency. High strength and hardness. to use. Used to process the pattern on the surface of the workpieceIdeal for damaged linear knurling wheels. Specification:Material: SteelColor: Black (Knurling) + Brown (Wheel)Knurled Pulley Drawing: approx. 0.5mm, 1.0mm, 2.0mmKnurled Pulley Diameter: approx. 20mm0.5mm Knurled Pulley: 0.5mmNet Pulley Diameter: about 26mmHole Diameter: approx.10mmKnurled Pulley Thickness: about 8mm1mm Knurled Pulley: 1.0mmKnurled Pulley Outer Diameter: about 26mmHole Diameter: approx.10mmKnurled Pulley Thickness: about 8mmKnurled Pulley 2mm Knurling Diameter: 2.0mm Knurled Wheel Outer Diameter: Approx. 26mm Hole Diameter: Approx. 10mm Knurled Wheel Thickness: Approx. 8mm Overall Size: 25 * 8mm / 1 * 0.3in (Outer Diameter * Thickness) Weight: Approx. 545g / 19.2oz Package List: 1 x Knurling 6 x Knurling Wheel