Dannmar DJ-4500 Rolling Bridge JackDannmar DJ 4500 Rolling Bridge Jack 4,500 lbs. Capacity If you will be adding the D4 9 lift in your shop, we'd recommend a pair of DJ 4500 rolling bridge jacks to raise both the front and the rear of vehicles you are repairing. This gives you the versatility to perform your job on a variety of vehicles under many circumstances. The DJ 4500 rolling bridge jack teamed with Dannmar's D4 9, 4 post lift is one of Dannmar's most popular packages. And the D4