X-Core™ pinless joint design is 4x more durable than pinned products for increased strength; 30° maximum operating flex angle; Smooth 360° rotation for easier access; Off-corner loading reduces fastener rounding; Chrome molybdenum alloy steel (Cr-Mo) for exceptional strength and durability; Black oxide finish to resist corrosion; High-visibility laser-etched markings provide quick size identification; Meets or exceeds ASME specifications; Includes socket rail for storage and organization