IROTEC Iron Dumbbell Barbell 5kg Plate Set of 4 Steel Dumbbells Muscle Training Bench Press Iron Aray Iron Aray Adjustable Training Equipment Hole Diameter: Φ28mm (for Φ28mm shafts only) I haven't used them much, so they're relatively clean. Purchased less than a year ago. Already packed. Since they will be shipped from the post office, I cannot ship on weekends and holidays, but I will respond promptly on weekdays. Due to the regulations of the delivery company, I cannot ship items over 30kg or exceeding the size limit. I may not be able to approve bulk purchase requests depending on the combination. Thank you for your understanding.