BUILT TO TAKE HEAVY EVERYDAY USE. PERFECT FOR USE IN WAREHOUSE STOCKROOM AND MAINTENANCE AREAS. INCREASE PRODUCTIVITY QUICKLY BY TAKING THE LADDER WHERE THE WORK IS. EASY ASSEMBLY. 10"" DEEP TOP STEP NO HANDRAIL. LOCK HAS SPRING LOADED CASTERS THAT RETRACT WHEN STEPPING ON LADDER; RUBBER FEET GRIP FLOOR. LADDER ROLLS FREELY AFTER YOU STEP OFF.