AMP Research 75125-01A PowerStep Running Board Power Step for Cadillac Escalade 2007-2010, Chevy Suburban, GMC Yukon XL High strength, die cast aluminum alloy linkage arms, anodized and coated to resist corrosion Precision, zero maintenance stainless steel pivot pins Extruded aluminum steps with a textured powder coat finish for maximum grip and durability 600 pounds load capacity (each side)