TR Industrial Ground Rod Driver, TR-One Shank for TR Industrial TR-100 and TR-300 Series Demolition Jack Hammers Compatible with these TR Industrial Demolition Hammers accepting TR-One shank: TR-100 Series (TR89100, TR89105) and TR-300 Series (TR89300, TR89305, TR89307) Use as driver for soft ground rods up to 3/4 in Enhance your demolition and chiseling job with this ground rod driver Made with high-grade forged and heat treated steel for maximum durability This bit does not fit Makita, Milwaukee, Bosch, Dewalt or Hitachi hammers