Engineered and built by Geoprobe, the patented interlocking split spoon saves drillers both time and money. The interlocking split spoon is two-times stronger, lasts longer, and is operator-friendly with fewer turns to put together and take apart thanks to multi-lead threads at the drive head and cutting shoe. The interlocking feature eliminates bulging and bowing by strengthening the entire sheath and enabling it to stay aligned during impact. The design also meets ASTM Standard D1586.