Single Mass Dynamic Penetrometer Range 10 to 100 Percent California Bearing Ratio (CBR) and 762 to 7072 Pounds per Sq ft Complies With ASTM D6951 Includes (2) Quick Connect Pins (2) Wrenches 3-in-1 oil 37 3/4 in Drive Rod marked in 2 in Increments Instructions Reusable Hardened Point Single Mass Hammer (17.6 lb) Manufacturers Warranty Length 6 mo