Removable vacuum gauge. The special design allows convenient 360 degree rotation of the gauge and easy removal of the pins. . Replaces original gauge on all Mityvac Silverline and Selectline hand pumps or additional option for pumps purchased without a gauge. . Includes socket to adjust to threaded connections and locking pin. . Indicates 0-30 inch mercury (0-100 kPa) vacuum. . Replaces part number 06172 MVA6172 Warning: This product may expose you to a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov. -