Introducing the TUSK range of walk behind Concrete Power Trowels. The TPT 610 concrete power trowel is the smaller model perfect for finishing small surfaces, concrete along edge sections and around pillars. 50kg machine. 5hp Briggs & Stratton petrol motor. The folding center pole makes transporting easy. The larger TPT 915 concrete power trowel is perfect for finishing medium surfaces. 75kg machine. 6hp Briggs & Stratton petrol motor. Blade pitch can be mechanically adjusted on both machines.