The new STX-58 treble features a new type of wire that is 20 stronger than the high carbon steel currently used in all Owner Hooks. This new ZO-WIRE helps create hooks that are smaller in diameter, yet stronger and harder than ever before. The single most important characteristic for hook penetration is the wire diameter. ZO-WIRE hooks are stronger per wire diameter than any hook on the market. The hardness of ZO-WIRE makes the point almost indestructible. Standard length, straight slightly curved in super needle points, and corrosion resistant vacuum tin finish.