Lpd trade static dissipative kick step stool w/ 3 conductive spring loaded casters – c8000 static dissipative kick-step stool with 3 conductive spring loaded metal casters, rugged metal construction with 3 conductive, spring loaded metal castors. Static dissipative covering on both standing areas. dimensions: top standing area diameter: 11 inches 280mm, height: 15-3/4 inches 400mm bottom standing area diameter: 13 inches 330mm, height: 7-7/8 inches 200mm. typical resistance to groundable point: 104 106