The Accu-Tac spikes are a great add on accessory for your bipod. They aggressively plant into the dirt or any soft surface. CNC machined and black oxide treated. These replacement spikes make it very simple to switch between the standard rubber feet, which can be done within seconds. Simply screw them on. Never go out in the field without being prepared, these Accu-Tac spikes can easily be stored in your pockets or bag. Always be ready to take the perfect shot on any terrain! Quality materials and coating for lasting performance.