Narva C Brake Sealed 20A KC18DC GRZ 1 8in ) Tungsten carbide Size:18V 1 8in ) Tungsten carbide particles bonded to alloy steel back Tungsten carbide cutting edge 29mm cutting depth 3 16in thick heavy duty backing plate High heat and abrasion resistance No teeth to dull or chip Cuts extremely hard abrasive materials Resists snagging Eliminates need for drive plate Cuts slate & tile 54mm 2 it comes with the pioneering build quality Xcel Arc is recognised for throughout the industry 55220 20 AMP SEALED AUTOMATIC RESETTING CIRCUIT BREAKER (Box of 1) A circuit breaker is an automatically operated electrical device designed to protect an electrical circuit from damage caused by overload or short circuit