Bosch EXPERT MATI 68 RD4 Starlock Max Diamond Corner Blade

The Bosch EXPERT MATI 68 RD4 is an oscillating multi-tool corner blade designed for removing mortar and grout between tiles. Its pointed segment profile provides direct access to corners and other tight spaces where straight blades cannot reach. The accessory supports detailed repair, renovation, and installation work in confined areas and is aimed at professional tilers, kitchen and bathroom fitters, tradespeople, and experienced DIY users carrying out more complex modifications. The single-corner shape allows the operator to work around existing fittings during localised material removal.

The accessory is built to transfer power efficiently from the multi-tool to the cutting surface without flexing. It handles joint sealant, soft ceramic tiles, fibre-cement boards, and fibre-reinforced plastics such as GRP and CFRP in standard use. Continuous work on these demanding substrates requires a robust blade design to keep the cut accurate. The component integrates directly with the tool's oscillating mechanism, giving the user precise control over the cut. Compatibility with the user's equipment should be checked before starting a project.

• 1.6 mm cutting width – removes grout cleanly without damaging adjacent surfaces.
• 30 mm maximum working depth – provides sufficient reach for standard joint depths.
• Carbide blade body – offers structural rigidity during aggressive material removal.
• Starlock Max mounting system – requires a compatible oscillating multi-tool.
• Diamond-segment edge – maintains sharpness on highly abrasive building materials.