The Samson Sieve Grip 6-12 was produced from 1912 to 1917 by Samson in Stockton, California. It was a three-wheeled tractor notable for its distinctive steel wheels with an open tread pattern. It featured a 1-cylinder all fuel engine, a 1-speed transmission with 1 forward and reverse gear, and claimed power outputs of 6 hp at the drawbar and 12 hp at the belt. The tractor weighed 5,800 lbs (2630 kg).