Machine type and compatibility: Automatic machine; can be used with an accompanying machine; center height adjustable to fit different workpieces and setups. Durable design: Features special hardening to extend service life. Primary application: Rolling knurling (no cutting). Mechanism and adjustability: Extrusiontype design that can be moved laterally during processing of twill patterns. Benefits: Noncut knurling preserves material integrity and avoids waste; adjustable center height broadens compatibility with various fixtures and parts; lateral movement enables twill pattern processing without retooling. Use scenarios: Knurling on cylindrical shafts or pins to improve grip without removing material. Knurling on fastener bodies or connectors where maintaining crosssection is important. Integration in production lines to pattern twill surfaces on extruded profiles, using lateral adjustment to cover different pattern areas.