Is the Mecale rotary tool strong enough for metal?

It handles light work on soft metals like aluminum and brass with the right bit. For steel or continuous cutting, an 8V cordless tool will stall where a corded tool keeps going.

How long does the 5.0 Ah battery run?

Battery capacity is large for this class, so expect longer sessions than with small 4V tools. Runtime depends on the task: polishing and engraving draw far less than cutting or grinding.

Can I use Dremel bits in it?

The kit uses the common rotary-tool collet and accessory sizes, so standard 1/8-inch shank bits generally fit. Check the collet size on the bits you already own before relying on them.

What comes in the 136-piece kit?

The kit pairs the tool and battery with a large set of cutting wheels, grinding stones, sanding drums, polishing heads and drill bits. Exact contents are worth checking against the accessories you actually plan to use.

Does it come with a charger?

It ships with one rechargeable battery and its charger. With only one battery, plan charging time into longer projects.

Is it a good first rotary tool?

Yes for light craft and repair work, because the kit covers the common accessories. If you plan to cut hard metal or work for hours, a corded tool is the better first buy.