Total HSS drill bit diameter:5.0mm 10pcs

a Multi-Purpose Articulated Folding Ladder. The specification “$4 times 4text{M} (4.7text{M})$” breaks down as follows:

1. $4 times 4$ (Configuration): This indicates an articulated ladder with 4 folding sections, and 4 steps/rungs on each section, giving a total of 16 steps.¹

    

2. $4.7text{M}$ (Maximum Length): This is the approximate length of the ladder when it is fully extended into a single straight ladder configuration.²