Explosion high neck tap wrench is a security tool, sparks work effectively prevented, for all flammable and explosive. His material is divided into two kinds of aluminum bronze and beryllium. These two materials from the color aluminum bronze stars are yellow, red and yellow beryllium is from HRC25 hardness points aluminum bronze and beryllium bronze HRC35.
Packing: inner packing with a plastic bag with a plastic outer ensure export corrugated curved handle tap wrench tap wrench convex tap wrenches