The ESCO Heavy Duty 20 Ton Screw Style Jack Stand uniquely allows technicians to control the exact support height with extreme precision. This professional swivel-style jack stand has infinite height possibilities with its built-in easy to turn screw adjustment handle. Screw-style feature allows technician to set exact desired height from 16.5 to 26.5 inches. Ideal for heavy-duty, construction, mining, and industrial applications.