This frame was very difficult to assemble because the timbers were badly twisted which made it difficult to line up the pre-drilled holes and get spanners onto the bolts/nuts. Eventually overcame this with help of pump pliers and clamps. Also, no instructions and there are different bolts/coachscrews for different parts of the structure - figure it all out first before starting assembly. Now that it's up, it looks very nice and works well - will work safely without ground anchors in most situations and certainly for younger children but anchors are advisable.