The multi-function/combination folding stepladders can be work platform,trestle ladder,single extension ladder or free standing. Item NO.:BKL-1502.,BKL-1503,BKL-1504These multifunctional ladders can be work platform,a trestle ladder,a single extension ladder or a free standing step ladder depending on your needsWith just a few simple steps,you can transform thies ladders into whatever form you ...