... 5,6,8,10,12 LB non-sparking safety tool copper hammerThey are mainly used in hazardous environment where flammable and ... rise sparking when tools strike,rub or collide with target in explosive atmosphere.There is two kinds of material,Beryllium Copper alloy and ... Aluminium Bronze.Specification: Material: fiber handle+ copper headSize: 1,2,3,4,5 ...