Available in 6" 9" 12" 15" 18" 24" 30" (15.2 cm, 22.9 cm, 30.5 cm, 38 cm, 45.7 cm, 61 cm, 76.2 cm). Toro Augers are designed for years and years of service. From the penetration tip of the bit to the connection design on the shaft, Toro augers are engineered for durability. High carbon teeth penetrate the soil and protect the flighting. The teeth are easily replaceable when they become worn. The flighting on all Toro augers is connected to the shaft by a continuous weld. Most other auger flightings are tack welded at 2 or 3 spots on the shaft. High stress can cause the tack welds to crack and break, Toro welds will not break under the same conditions. The Toro flighting is composed of 3/8" (1 cm) thick continuous steel where many other augers are 1/8" (3 mm) thick or less. The shaft of the auger firmly connects to the power head reducing "play" in the system and creating a longer lasting auger. This connection provides less "shock" to the power head, lengthening the life of the head and its components.