Engineered bolts designed especially for stump cutter teeth. These bolts make up for the shortcomings of standard allen bolts. They have a six point external drive head for ease of installation, a smooth shank to strengthen the bolt and an extraction slot on the end for easy removal of broken bolts. When tightening Greenbolts, torque them 180-240 foot pounds with a torque wrench. Bolts should be 1/8" to 1/4" recessed from the outside of the Greenteeth pocket. Match the bolt sizes below to the thickness of your wheel.