Norco Four-Stage Telescopic Floor Jack, with ram capacites of 55, 37, 23, and 12 tons, features a lift height from 5.9" to 15.4" and requires 100-175 PSI of air for its air/hydraulic operation. Designed for heavy-duty truck, rail, bus, agriculture, and construction equipment applications, this jack features a double-acting pump to raise the ram more quickly to the load and and a vacuum-operated ram retraction system to eliminate manual lowering of the jack. A 5'-long "T" handle helps in positioning the jack under vehicles with a low overhang, and a handle-locking lever secures the jack's handle in the vertical, 45, or horizontal position. This unit also features a safety overload system to prevent cylinder damage, an integrated filter to protect the air motor, and a safety button at the top of the handle that can be pushed to immediately stop the jack operation in case of emergency. A suspension-loaded axle prevents wheel damage, and the jack's four rams come with a rust-inhibitive coating. This model jack also includes a removable 4-3/8" diameter saddle, as well as 2-9/16" and 5-7/8" extensions and an extension holder. Note: Freight charges for this product will be calculated after order is placed, and we will contact you with the amount. Please call if freight quote is desired before ordering. Norco charges a limited access fee for shipments to military bases, schools, churchs, and all other gated areas, as well as charging a substantial fee for re-delivery of order, lift gate use, and residential delivery. Also, local sales taxes will be applied to ALL Norco orders shipped to California.