Trickstep: detachable 3 and 4-step models are made of mild steel square tubing, TIG welded for solid integrity, and coated with Marine industry Tuff coat (black). Includes handrail, non-skid step pads, and all hardware for mounting. All steps are built for Starboard (right) side of boat access only.Series Breakdown:Z 100 Series:Z175 . Z185 Z 500 Series:Z520 . Z518 . Z519 . Z521 . Z521L . Z518C . Z519C . Z520C . Z521C . Z521L . Z521L . Z518 . Z519 RT Series With EZ Loader Trailer:RT178 . RT188 . RT198 Reata Series (4 Step Model): Z522D. Reata . 212LS Reata . Z522D . 618T . 620T VS Series (4 Step Model):VS1682 . VS1782 . VS1882 . Bay 2360 FS Series (4 Step Model):621FS . 619FS . 620FS Disclaimer: RANGER® is a trademark of White River Marine Group, LLC. This product is not produced by, sponsored by, or otherwise affiliated with White River Marine Group, LLC.