Hooked Ends Steel Fiber(length/diameter60/60 50/50 65/60 55/50 80/60 45/35 55/30 60/30 50/25 60/25)The steel fiber is made of high-quality low-carbon steel wire,with the characteristic of the high tensile strength,good toughn ess,tec.This product is widely used in the construction fields for concrete reinforcement.