Designed for lab and field use to extract soil samples from 4" and 6" compaction molds, as well as 2" and 2.8" tube samples. The ejection force is generated by means of a 3-ton (27.7kN) capacity, hand-operated hydraulic jack. The cast-aluminum ejector head assembly can be positioned at different heights through the use of quick-release pins. This enables the operator to easily match the ejection travel to the height of the mold being used. Piston stroke is 7.25" (184mm). Overall Dimensions: • 13"W x 6"D x 27"H (330 x 152 x 686mm). Can also be used to extract both soil and asphalt samples from 4" and 6" compaction molds. If you have questions about Sample Ejectors or need assistance selecting equipment, please call us at 1.800.544.7220 or use our Ask Humboldt form.