Available in different sizes and shapes, chocky bars, wear buttons and grizzle cap from HEDI is extremely hard, laminated bi-metallic, wear resistant composite with chrome-molly white iron being bonded onto a mild steel backing plate. The bonding shear strength is over 210Mpa and will not separate. The hardness of alloy, 700 Brinell or HRC63 minimum, provides maximum abrasion resistance.