Professional SDS Plus Hammer Bit 16.0 x 450A high performance drill bit with a superior European carbide tip to give extended durability. German tested and PGM approved to ensure the bits drill with dimensional precision and performance when used in concrete and masonry. USER CAUTION: Rebar drilling will result in reduced tool life. All chisel tip SDS drills can shear if the tip snags the reinforcing whilst passing alongside. Special nickel chromoly shank High quality European BC20 Tungsten