Slip-resistant recessed step area for easy entry and exit from vehicle No-drilling required for easy installation Tube wall thickness is.050' for durability Fits 1992-94 Blazer Full Size 2 door (excludes ZR2), 1988-98 Chevy & GMC C/K Regular Cab (includes Z71), 1995-99 Tahoe & Yukon 2Door Westin does not offer an E-Series for the 1996-1998 Extended Cab 3 door