KT-S fish scaler: The fish scaling machine is safe in operation. It is security insulated and tested to 4 000 V and well protected from spray water . The motor has been tested and approved for continuous use. The appliance can be connected to a grounded or non-grounded wall socket. The shaft has four-fold protection, with two layers of steel, on of insulating compound and one layer of plastic. The ball bearings in the scaling head are waterproof. All external parts are rustproof. The KT-S is saf