The high segments of this cut-off wheel are made of an advanced matrix of metal and diamond that remains extremely sharp. These segments are laser welded onto a hard steel body. The sides are grooved to remove dust, improving efficiency and longevity. This blend of optimum diamond grit and advanced design features gives the Bosch Expert MultiMaterial X-LOCK diamond cutting disc unsurpassed durability. It cuts more reliably and lasts longer than other Bosch diamond blades, ultimately offering excellent value for money. With X-LOCK, one click is all it takes - the fastest accessory changing system on the market. It also fits angle grinders with nut and thread.