Alpine Magnum Portable Stump Grinder | Arboristsite
14 reasons to buy an Alpine Magnum Stump Grinder – Trencher – Brush Cutter. 1. At 88 lbs. It's easy to transport by small pickup, station wagon, bucket truck, or chipper truck.. 2. Our portable stump grinder - trencher operates for about $4.00/hour including gas.. 3. Our portable stump grinder - trencher goes anywhere, doesn't leave tire tracks, and doesn't need a trailer to tow it.