This accessory for the Rebellion XD ball mount features standard pintle hole spacing to accept any CURT plate-mount pintle hitch. The holes are spaced 3-5/16-inch wide by 1-3/4-inch high. This pintle mount attachment also features an integrated rubber dampener to compliment the Rebellion XD ball mount's resistance to jerking, jarring, vibrations and noise. The CURT Rebellion XD adjustable cushion hitch ball mount upgrades your towing system with a smoother ride, greater control and enhanced longevity, all while providing exceptional towing power with virtually no need for maintenance. It is unlike any other ball mount because it operates using ShockDrop technology. At the core of this heavy-duty ball hitch is a cushion isolator that resists jerking, jarring, bumps, vibrations, chucking and rattling noise at the coupling point. Unlike a cushion hitch or torsion hitch that uses airbags or bearings, ShockDrop offers extended resistance to wear without the need for maintenance. The result is a more comfortable drive, increased driver control and better management of the vehicle-trailer combination in events of sudden braking. The adaptive, suspension mechanism and lightweight design of this cushion hitch help minimize stress on your vehicle and its suspension and braking systems.