Features: M10Adapter for Model100 Angles Grinders,M14 for Model 115/125 Angles Grinders. Perfect for woodworking projects. This angles grinders can be easily convert into a engraving machine through the conversion head, which is very convenient; This angles grinders conversion adapter craft from excellent quality ABS and steel, which is solid, not easy damage, and have long service life. This angles grinders converter adopts ergonomics design, which is comfortable in hand Specifications: Material:Metal Option Type:M10Adapter for Model100 Angles Grinders,M14 for Model 115/125 Angles Grinders, Outer Diameter:Approx.73mm/2.87inch; Inner Hole:Approx.16mm/0.63inch; Package Includes: 1set Adapter note: Please allow 1-2cm errors due to manual measurement,please make sure that you donot mind befores you order. Due to the differences between different monitors, the picture may not reflect the actual item color.