CARASAFE Bottle Jack. Carasafe Lift Boy Hydraulic Bottle jack (Rated load 2000kg) constructed from heavy duty steel and cast iron with wide base for stability and features a quick release valve. Supplied with detachable handle. The Liftboy 1 extends from 165 - 325mm. Ideal for use with your caravan or vehicle when changing a wheel. Where a jacking point is not present use the BJ495 Carasafe stability support with this product.