The Pelsue Model EB56 and EB66 are lightweight and portable bases designed for use with Pelsue Davit Arms. The width can be easily adjusted and the entire base collapses down into convenient storage dimensions. The bases have wheels so you can easily roll the system to the confined space. They include 4 corner jacks for leveling on uneven ground. Max. davit offset is 18 to 24 in.