... new hard-drawn intensified steel wire. After process of drawing, cutting and grinding round, it will have ... sizes, no air bubble inside, with the ability of quick blasting and be durable. This product is ... gear wheel, screw, spring, chain and many kinds of punch workpiece, standard pieces, stainless steel etc. After ... satisfaction. This product is 1/5-1/7 times of ordinary steel shot. And it is the first ...