Bosch X-LOCK technology Easy changing of X-LOCK angle grinder accessories in seconds with just one click. Change accessories without additional tools. To ensure optimal results when using Bosch Professional X-LOCK angle grinders, Bosch offers a huge range of accessories to cope with all kinds of tasks. X-LOCK accessories can be used with X-LOCK angle grinders as well as angle grinders without an X-LOCK interface. Accessories without X-LOCK are not compatible with X-LOCK angle grinders.