TMS 3 Step Stainless Steel Telescoping Boat Boarding Over Platform Ladder Swim Step Durable, stainless steel step ladder is collapsible and mounts to any boat Ladder telescopes down and easily folds over platform Each step has a flat tread cover w/ non-slip plastic for added safety Features: Velcro strap to secure ladder when not in use. Width: 11" Height: 34" when extended.Mount: (4) x 1/4 '' diameter holes Easy to install.