two post lift, clear floor with single point release,simple,endurable, and reliable with CE certificate, 2 post lift Model No:PL-4.0-SWStructure: ... "international standard" column steel plates 8MM brace arm and 6MM internal sliding column, never deform wearable, anti-high ... the common materialsPOWERdouble cylinder dynamic hoist drive device, capacity is more than 4 ton aluminum pump system mechanical ...