... T 24001-2004-ISO14001:2004 The SE350 and 500 Ton Casing Elevator/Spider Units are pneumatically operated power tools, ... (700,000 pounds) for the 350 ton unit and 4500kN(1,000,000 pounds) for the 500 ... Unit HeightAmerican UnitsMetric500350500350Elevator with Bell Guide(Less Guide and Slip Assy.)4,265 lbs3,600 lbs1,941 kg1 ... ,634 kgSpider(Less Guide and Slip Assy.)4,065 lbs3,400 lbs1,850 ...