Sealey cross beam adaptor 3tonne 4 x 4 sealey x137 cross beam adaptor which quickly and safely overcomes the awkward job of lifting 4 x 4 vehicles with offset differentials simply remove the existing trolley jack saddle replace with cross beam adaptor fit the jack saddle into the hole in the adaptor and you are ready to lift suitable for jacks with a 31 33mm saddle spigot pin including model no s 3000cxd 3000lq 3001le 3003cxq 3010cx 3012cxd and 3030cxd note remove any rubber