With Handle-iT's new sack truck designer system, you can build that sack truck or barrow that suits your requirements, and your operators. Simply choose the Back 4 from the sack truck designer link and add the plate, the handle and the wheels that suits your operation best. Take into account the size of the load, the balance of the load. Then look at the operator his or her abilities, and stature, remember the higher the handle is the more leverage the truck will be able to apply to the load. Then consider the drop you have to delivery to. P handle are great if the operator has to negotiate doors, where as if the loads are heavy look to consider the fact that the operators should have two hand on the truck at all times. Then to finish off, which wheels should finish the truck off, standard air filled tyres, or our polyurethane puncture proof wheels, they look like pneumatic tyres, and ride like them, but no more punctures, and no more imbalance of the tyre pressures.. Take into account the size of the load, the balance of the load. Then look at the operator his or her abilities, and stature, and consider the drop you have to delivery to. as to which wheels shoudl finish the trukck off.