Tool Box Dolly Caster Bearing Type Steel Ball Bearing Caster Brake Type Locking Casters Caster Diameter 4 in Caster Material Polymer Caster Tread Material Neoprene Caster Type Solid Caster Width 1 in Color Black Compatible Modular System Packout For Use With PACKOUT(TM) Series Modular Storage System Handle Type No Handle Includes (4) Wheels Number of Casters 4 Overall Depth 18 7/8 in Overall Height 13 1/4 in Overall Width 24 3/8 in Part of a Modular System Yes