Suitable for use with angle grinders and handheld stone cutting saws, these diamond blades are ideal for cutting concrete with rebar, brick, limestone and similar building site materials. They are designed to provide a faster work rate and offer a speed increase of around 30% compared to alternative designs. Features & Benefits Standard universal diamond blades for versatility High speed design for 30% faster work rate Includes Quick Release Angle Grinder Flange Locking Nut. Amazing super fast tool less change over seconds! Enabling the user to change a worn disc to a new disc without any tools. Saving you time and money! For All M14 Thread Mini And Angle Grinders 115mm To 230mm Features No need for Spanners - Just Hand Tighten Allows users to change the disc/blades or other accessories on your grinder in seconds With integrated keyholes, for removal of the nut with a standard pin spanner in the event of the nut becoming too tight.