The BDP 51/1500 C Is An Efficient Burnisher That Restores Your Hard Floors. It Has An Easy-To-Use Adjustable Handle And A Non-Marking Bumper To Protect Your Machine And Facility. We Included Features Such As A Mechanical Interlock To Prevent Accidental Starts For Safety. The Built-In Circuit Breaker Protects The Motor For Long Life And Durability.