Amazon.co.jp: DayPlus Telescopic Ladder, Up to 16.4 ft (5 m), Foldable, Lightweight, Multi-functional Aluminum Ladder, Load Capacity 330.7 lbs (150 kg), Japanese Instruction Manual, Automatic Lock, Sliding Type, Aluminum, For Indoor and
Amazon.co.jp: Multi-Purpose Ladders - Material Handling Products: Industrial & Scientific