Werner D17162EQ Equalizer 225-Pound Duty Rating Aluminum Extension Ladder with Integrated Leveling System, 16-Foot Built-in bubble level for accurate set up Leveler leg precisely adjusts in increments of 3/8" up to 8-1/4" Extra large knob for easy leg height adjustment 90-degree swivel, dual action foot for hard and soft terrain Colored surface for additional user safety