Rail saws have one advantage in that it can start cutting anywhere on the wood. The saw has a voltage of 54 volts and has a somewhat modest weight of 5.1 kg.
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DEWALT DCS520T2 54V Flexvolt 165mm Plunge Saw with 2 x 6.0Ah Batteries & Charger in Case with Accessories
Tools4trade
Dewalt DCS520T2 54V Flexvolt Brushless 165mm Plunge Saw 2 x 6.0Ah Battery Charger Case with Accessories - 18V