Rugged and sturdy construction for long life Low profile construction for increased stability Low rolling-resistance allows for easy transportation Attachable load leveling plates and swivel turntables for turning corners. Previous Next TabsChart ( metrics ) Set Capacity* Set Model Number Load Skates 4x Turntable Swivels 2x Leveling Plates 2x Set Weight including handles and storage case ton (kN) kg 20 (178) ERS-20 ER-10 ES-10 ELP-10 49 30 (267) ERS-30 ER-15 ES-15 ELP-15 55 60 (533) ERS-60 ER-30 ES-30 ELP-30 75 Chart ( Imperial ) Set Capacity* Set Model Number Load Skates 4x Turntable Swivels 2x Leveling Plates 2x Set Weight including handles and storage case ton pound 20 ERS-20 ER-10 ES-10 ELP-10 110 30 ERS-30 ER-15 ES-15 ELP-15 123 60 ERS-60 ER-30 ES-30 ELP-30 167