... , gouge,etc for professional usage on highest cutting efficiency. Hammer Chisel with SDS-plus shank, 40Cr steel and GCr15 steel for ... 20mmRound, 14mm2802011.4014280Spade 40mmRound, 14mm2802011.2514280Gouge 22-25mmRound, 14mm280 Hammer Chisel SDS-plus