www.thedriller.com/articles/91421-maxs-enterprises-hydraulic-shelby-tube-sampling-machine

Max’s Enterprises Hydraulic Shelby Tube Sampling Machine
February 19, 2019
Max's Enterprises new patent-pending portable hydraulic Shelby tube sampling machine bolts to concrete floors and has a 30-inch stroke that allows you to push and pull Shelby tubes samples to depths of 10- to 20-feet depending on the soil. It features a hydraulic-powered system that comes with a battery that lasts up to 20 hours between charging, and front wheels you can attach in seconds for easy mobility.