[HIGH QUALITY]:Converter Screw Drill Adapter is made of premium metal material, high hardness, durable construction engineered for service life.Turns your grinder into a grooving machine quickly [PRACTICAL GRINDER ADAPTER]: professional adapter turns your grinder into a grooving machine easily and quickly. Expand the function of grinder, helps you to achieve various works through one machine. [SIMPLE TO USE]:The threaded design makes it easy to apply on your grinder. Saw blades(not included)can be added or reduced according to your own needs, up to 4 saw blades can be used at the same time. [PROFESSIONAL MODIFICATION]: grinder is changed to slotting machine, suitable for most models. It is suitable for site construction, , water and electricity grooving, and tea tray stone frame drawing decorative strips. Stronger adaptability and wider operability. M10 adapter is suitable for type 100 grinder use. perfect for grooving walls, bricks, tiles. Colour: Silver + Black Material: metal Package Contents: 1 x Grooving machine modification head M10 1 x Protection cover (inner hole 42mm) Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.