Powermatic DDS-237 Drum Sander, 7.5HP 1Ph 230VThe production class Powermatic DDS 237 Dual Drum Sander that is loaded with features. A 7. 5HP motor drives the dual steel drums, which have a hard durometer rubber coating to ensure a flat, mar free finish. Independently adjustable rear drum makes fine tuning easy. A heavy cast iron table incorporates four solid jackscrews with chain drive timing to keep it level at all times. The heavy duty poly conveyor belt provides a positive grip on the stock.