Rotary Tool Grinding Starter 3-Piece Kit

The RYOBI 3-Piece Grinding Starter Kit provides a versatile selection of accessories for grinding and deburring metal, and sharpening blades with your rotary tool. A practical option for maintenance, repairs and metalwork projects, this Kit includes a Pointed Cone Grinding Stone, Cylinder Grinding Stone and Cone Grinding Stone.

Use the Pointed Cone Grinding Stone for sharpening and detailed edge work on small cutting tools. It’s ideal for restoring the edges on knives, scissors, lawn mower blades, chisels and screwdriver tips, as well as deburring and refining tight internal features. The pointed tip allows for precise control when working in grooves, corners and other hard-to-reach areas.

The Cylinder Grinding Stone is suited to general-purpose grinding across flat surfaces and broader contact areas. Use it to sharpen mower blades, axes and other large cutting tools. This Grinding Stone is also suitable for smoothing welded joints, removing excess material from metal, or cleaning up rough edges after cutting. Its cylindrical profile maintains consistent contact, making it effective for deburring and surface preparation.

The Cone Grinding Stone is designed for shaping, sharpening and deburring curved and angled surfaces. It sharpens tools such as knives and garden implements, rounding off edges, removing rust, and smoothing metal pieces (including metal pipes) after cutting. The tapered shape enables easy access to internal contours and uneven surfaces for controlled material removal.

Each Grinding Stone has 3.2mm shank to fit the collet or keyless/universal chuck of your rotary tool.

Available in-store and online from Bunnings Warehouse.