The Soil Probe Extension Handle allows one to take core samples without having to climb off his/her four-wheeler in loose soils or use the step plate in compacted soils. The 4-foot-long extension with T-bar handle at the top and step plate at the bottom provides for plenty of downward force to pierce even compacted soil without straining one's back. A clip an 1-inch increment holes allows quick depth adjustment and ensures soil cores are pulled at the same depth at each site.