The Carrymaster APLC series are medium duty swivel casters with long adjustable leveling foot that combine the functions of a caster and a leveler. With its long leveling foot protruding the plate, APLC series allows a big range of height adjustment. APLC series casters come with anti-vibration leveling foot(default NBR nitrile rubber pad, optional urethane pad) that can be easily adjusted by turning a screw nut. The leveling foot is made out of galvanized zinc and can be adjusted by turning a screw nut. APLC series are only made with a plate/flange top (F type. The load capacity ranges from 441lbs to 1,543lbs per caster and the wheel size range from 50mm to 72mm. The metal frame of APLC series is SPC zinc galvanized finish. The default wheel is made out of PA6 material in black and some models can be modified with MC Nylon(Blue) or Antistatic Polyurethane(with bearings).