160mm Stairs Climber Caster Tri Wheel 287 Lbs Rubber - Cast iron Core160mm Caster Wheel 287 pounds Swivel Rubber and Cast iron core VXB015160 Stairs Climber Caster Tri Wheel Wheel Diameter= 160mm Wheel Width= 40mm = 367mm = 207mm = 25mm Axle Diameter: 20mm Wheel Core= Rubber and Cast iron core Tire= Rubber and Cast iron core Bearing type= Roller bearing Load Capacity= 287 lb Mounting= Swivel Temperature Range= 40 to 180 F Yes, tri caster wheels can climb the stairs with a tri wheel design, moves large items quicker up