Product details:

Include 2 J-Cup liftoffs The SPRJC can mount on the front or rear uprights Tested to hold 1000lbs Need an extra pair of J-cup lift offs for your SPR500 or SPR1000 No problem, the SRPJC include 2 J-Cup liftoffs. The SPRJC can mount on the front or rear uprights and are tested to hold 1000lbs.