Easy storage for tools and parts while performing under hood maintenance Built in parts dividers and built in screwdriver / wrench / pry bar holders Protective bumpers for top tray 3" heavy duty swivel casters, 2 Locking and 2 Swivel. Height adjustable support post adjusts from 35.4" to 48.4" for clearance of front ends on most vehicles Maximum load capacity: approx. 88 LBs