Experience Maximum Speed

Experience High Speed

Grinding Metal and Stainless Steel
with Bosch Prisma Technology

The best your tool can get. Bosch Professional Accessories.

Grind stainless steel 4x faster

The performance of the Bosch EXPERT Prisma Ceramic has been tested against quality products in a Bosch lab: the EXPERT R782 Prisma Discs grind stainless steel up to 4X faster than our standard R444 Fibre Discs.

Gain Efficiency with Fast Stock Removal

There is a significant efficiency gain for the skilled craftsmen who do this job.

Stays faster for longer due to self-sharpening effect

The special structure of Bosch Prisma Ceramic ensures grains sharpen themselves as they work.

Speed and Excellent Finish with Triangular Shaped Ceramic Grain

The optimal triangular shape of every single ceramic grain offers a far more consistent cutting action than traditional abrasive grits, delivering not only high-speed metal grinding but also an excellent finish and increased product life.

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Bosch’s EXPERT Prisma discs are not just the fastest metal grinding discs in town: they also stay fast for longer due to a self -sharpening effect.

The special structure of Bosch Prisma Ceramic ensures grains sharpen themselves as they work, making working with them even more productive.

When you do eventually need to change a disc, this can be fast too – thanks to X-LOCK, Bosch’s fast angle grinder accessory changing system.

Additionally, the cambered design of the EXPERT R781 and R782 means the metal grinding discs are not deformed in use. By keeping their ideal flat shape, these EXPERT grinding discs maintain their fit with the backing pad for best working results.

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The best choice for metalworkers who work with stainless steel or very hard alloys

The Bosch EXPERT range of top performing power tool accessories includes two products using Prisma Technology: the EXPERT R781 for Metal and the Expert R782 for Stainless Steel.

The EXPERT R782 is the best choice for metalworkers who work with stainless steel or very hard alloys. When grinding these metals, the heat generated by conventional metal grinding discs can ‘burn’ the surface. With Prisma, you can grind for longer while avoiding this discolouration making it the best grinding disc for metal.

Thanks to a cooling aid which helps to displace heat during the work process, the R782 can grind far faster, for far longer, without burning the workpiece. It is compatible with Bosch’s revolutionary X-LOCK angle grinders and its wide grit range (No. 36+ - No. 120+) make it the best choice for all jobs.

Explore the Bosch EXPERT Prisma Technology Range

The Bosch EXPERT R782 Prisma Ceramic Fibre Disc for Inox allows you to grind stainless steel much faster than conventional discs, with no compromise on quality.