WT4 Features: -Safety stool.-No-slip steps with 8" deep tread.-Non-slip steps with foldable safety grab bar.-Folds away easily and stores in small spaces.-Incorporates a sturdy positive locking system.-Foldable grab bar for extra climbing stability.-Capacity: 330lbs.-Extension: 35.75". Includes: -Includes tool box and wheels. Construction: -Aluminium construction. Color/Finish: -Silver color. Specifications: -Exceeds type 1A weight handling requirements of 300 lbs. Dimensions: -Standard length: 35.75".-Overall dimensions: 23" W x 6" D.