Stem Casters for Quantum Conductive Wire Bin Shelving Systems - 4 Swivel, 2 With Brakes 5" x 1-1/4"

Stem casters for quantum conductive wire bin shelving systems - 4 swivel, 2 with brakes 5" x 1-1/4" optional conductive stem casters consists of four swivel esd/conductive 5" x 1-1/4" casters with two brakes features:they are resistant to electro static build up and electromagnetic interferenceprotects electronic components stored in unit, on which casters are installedtwo of the casters have brakeseach caster capable of holding a 300 lbs loadshipping weight: 12lbswhile attached to unit, caster keep it grounded