- Tanaka America Inc. announces the TEA-500 two-man auger has returned to the auger lineup and is available for purchase. The TEA-500 joins Tanaka's one-man auger, the TIA-350S. The TEA-500 features a 50cc, 2.5-hp Tanaka two-stroke engine; 33:1 gear reduction ratio; fold-up handles for easy storage, dual safety throttle system and a one-year professional/rental warranty. In addition, the TEA-500's one-inch diameter round output shaft can accept up to 12-in. earth bits and an optional 15-in. extension is available as well.