Eterra PDX-750 60" Spike The Eterra PDX-750 5 Foot Spike is ideal for turning the Eterra PDX-750 Post Driver into a rock breaker. Use this one on any PDX-750 Drivers in place of your driver head. Turns your PDX-750 into a rock breaking miracle. Breaks up rocks while creating a pilot hole for your post. Single pin removal and replacement. A must have for the serious post installer.
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