Material: Steel Knurling: 1.0mm/0.04"Wheel Size: 26x8mm/1.02x0.31"(L x T)Pulley Hole Diameter: 8mm/0.31"Color: Black(Knurling)+Brown(Wheel)Knurled Pulley Drawing: Approx. 0.6-3mm0.5mm Knurled Pulley:Knurling: 0.5mmNet Pulley Diameter: Approx. 26mmHole Diameter: Approx. 10mmHanawa Thickness: Approx. 8mm1mm Knurled Pulley:Knurling: 1.0mmKnurled Pulley Outer Diameter: Approx. 26mmHole Diameter: Approx. 10mmKnurled Pulley Thickness: approx. 8mm 2mm Diagonal Knurled Wheel:Knurling: 2.0mmOuter Diameter of Knurled Pulley: Approx. 26mmHole Diameter: Approx. 10mmThickness of Knurled Pulley: Approx. 8mmOverall Size: 26*8mm (Outer Diameter*Thickness)Function: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. Rust-proof, high processing efficiency. High strength and hardness. to use. It is used to process the surface pattern of the workpiece. Ideal for damaged linear knurl wheels. Package Included: 5 x Knurling WheelNote: Please allow 1-3mm errors due to manual measurement. The item color displayed in photos may be showing slightly different on your computer monitor because monitors are not calibrated same.