℃ / mm / kg ℉ / " / lbs Load Capacity 0 ~ 250 kg 250 ~ 500 kg 500 ~ 1,000 kg 1,000 ~ 1,500 kg 1,500 ~ 2,000 kg 2,000 ~ 3,000 kg 3,000 ~ 4,000 kg 4,000 ~ 6,000 kg 6,000 ~ 8,000 kg 10 ton 20 ton Wheel Diameter below 100 mm 100 ~ below 130 mm 130 ~ below 150 mm 150 ~ below 200 mm over 200 mm