Description: The package includes super hard knurling knives that are more durable and efficient than ordinary ones. With three sets of coarse, medium, and fine super hard wheels, this lathe tools can create decorative and non-slip patterns on metal surfaces. The package is designed for easy replacement, featuring spring-loaded locking tabs and pins.Specification: Material: 96CRKnurl pitch: 0.5mm, 1.0mm, 2.0mmKnurled wheel specifications: 26mm*8mm*8mmWeight: 0.55KGPackage Included: 3 Different Pattern Sizes (0.5mm 1.0mm 2.0mm 2 of each size), 1 Toolholder and AccessoriesWarm Tips: Adequate lubrication is essential for extending the tool's life. Mineral oil can be used for lubrication, and it is important to frequently remove iron chips to ensure a neat pattern.