The Bosch PRO 4 Piece Grinding Stones Set is a versatile collection of die grinding stones designed for grinding and deburring hardened and non-hardened steel in hard-to-reach areas. Mounted points are the go-to solution when standard grinding wheels simply can't access tight spaces or complex geometries. Their compact size and varied profiles make them ideal for working on small components, irregular shapes, and confined recesses that would otherwise be difficult to finish cleanly. This set contains five mounted points in a range of profiles — round, half-round, cylindrical, disc-shaped, and tapered — ensuring you have the right shape for each application. Each point is manufactured from premium abrasive grains with a vitrified bond, delivering consistent cutting performance and long service life across both hardened and non-hardened steel. The 6mm cylindrical shank is compatible with standard three-jaw drill chucks, making the set straightforward to use with most die grinders and rotary tools already on site. Features and Benefits: • Five profile shapes included: round, half-round, cylindrical, disc-shaped, and tapered • Premium abrasive grains with vitrified bonding for strength and durability • Suitable for hardened and non-hardened steel grinding and deburring • 6mm cylindrical shank compatible with three-jaw drill chucks • 60 grit across all five points for consistent material removal Specifications: Grit: 60 (all points) Shank Diameter: 6mm (all points) Diameter: 25mm (a), 15mm (b), 15mm (c), 25mm (d), 20mm (e) Length: 24mm (a), 30mm (b), 30mm (c), 25mm (d), 25mm (e) Net Weight: 0.160kg Contents: 1 x set of 5 mounted points (round, half-round, cylindrical, disc-shaped, tapered)