Features:* 7pcs Knurled Wheels: This wheel knurling tool includes 0.5mm 1mm 2mm three different sizes for 2pcs. Mesh knurled wheels and 1 pc. Mesh knurled knife.* Precision manufacturing: two rollers in the oblique direction, one is positive and the other is negative, mesh knurled knife with fine, medium and coarse diamond knurlings.* Anti-slip: mechanical metal process knob or other work to press patterns during the mechanical process to prevent slipping.* Superior quality: the knurling tool is rigid, wear-resistant, damage-resistant, rust-proof, high processing efficiency.* Widely used: used for workpiece surface pattern machining, great for damaged linear knurling wheels. Specifications:Product Name: Double Wheel Knurling Tool SetMaterial: SteelColor: Black(Knurling)+Brown(Wheel)Knurled Pulley Drawing: About 0.5mm, 1.0mm, 2.0mmKnurled Pulley Diameter: About 20mm/0.79"0.5mm Knurled Pulley:Knurling: 0.5mmNet Pulley Diameter: About 26mm/1.02"Hole Diameter: Approx. 10mm/0.39"Hanawa Thickness: Approx. 8mm/0.31"1mm Knurled Pulley:Knurling: 1.0mm Knurled Pulley Outer Diameter: About 26mm/1.02"Hole Diameter: About 10mm/0.39"Knurled Pulley Thickness: About 8mm/0.31"2mm Diagonal Knurled Pulley:Knurling: 2.0mmKnurled Pulley Outer Diameter: About 26mm/1.02"Hole Diameter: About 10mm/0.39"Knurled Pulley Thickness: About 8mm/0.31"Overall Size: 25*8mm/0.98*0.31" (Outer Diameter*Thickness)Suitable for: surface pattern machined processingQuantity: 7Pcs/SetPackage Included:1 * Knurling Tool6 * Knurling WheelNote:1. Transition: 1cm=10mm=0.39 inch.2. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.3. Please allow slight manual measurement deviation for the data.