The X-LOCK Expert for Metal Grinding Disc delivers an impressively long lifetime on metal with maximum safety The grinder wheel's premium aluminum-oxide abrasive grain, selected functional fillers and additives in a modern phenol resin bond matrix are particularly suited for metal applications Its precision-manufactured fiberglass fabric ensures especially high grinding disc stability and maximum work safety Bosch X-LOCK grinding disc also fit standard angle grinder tools Changing bonded grinding wheel is fast and convenient thanks to the keyless X-LOCK system Bosch X-LOCK Expert for Metal Grinding Disc has a diameter of 11.5 cm, thickness of 0.25 cm and bore diameter of 22.23 mm With Bosch’s power tool accessories you not only have more possibilities, but you also have twice as much fun doing your DIY-projects! Whatever you want to build, you can do it with Bosch