Probe Industries H13 Tool Steel Wrist Pins are designed to deliver the ultimate in weight reduction while maintaining maximum strength. H13 provides 289.000 psi tensile strength with a ultimate yield strength of 239,000 psi, along with increased ductility (30,500 ksi) compared to alternative materials. H13 tool steel pins are available in both straight and taper wall designs. Both are suitable for virtally all racing applications.