CR/DR Plate & General Cassette Mobile Holder with NEW H-Base provides greater stability and movement and prevents tipping. Vertical range from bottom of imaging plate: floor - 54". Arm slides vertically on 60" chromed steel post. Holder locks onto post with spring-loaded pin. Comes with E-Z-Roll swivel casters two are locking. Platinum baked enamel finish. Easy to clean for the OR setting.