50PCS Pike Fishing Accessories Connector Pin Bearing Rolling Swivel Stainless Steel Snap Fishhook Lure Swivels Tackle

302 stainless steel

Compared with ordinary stainless steel, 302 stainless steel has a relatively high carbon content, so the strength is better, and the surface uses carbonitriding technology.
Therefore, the surface layer is black, which increases the strength and wear resistance of the metal surface, and the fatigue and corrosion resistance are effectively improved.