Heavy Duty Knurling Tool With 2 Knurling Wheel Made For Mini Lathes Knurling has a wide variety of applications in day to day use. It is most commonly used for decorative purposes and for serrating surfaces where components are locked or keyed together in unit assemblies.  Product Specification: Type of Knurling Tool: 2 Wheel Knurling Tools Overall length: 135 Approximate Weight: 280gms Approximate