Scissor jacks stabilize and level your 5th wheel or travel trailer. Lifts and levels up to 5000 lbs. Adjusts from 5 -30 . Bolts or welds to RV frame. Use the included crank handle (only with SKU 52111) or use a drill and 19 mm socket for even faster operation. Bow tie base offers stability even on soft surfaces. | Stromberg Carlson 30" Scissor Jacks - Two Jacks with Handle