How far does it extend?

It telescopes out to 25 inches, which covers most under-seat and under-bench reaches.

Does it need batteries?

No. It is a plain telescoping magnet with no light or electronics.

It is made for small steel hardware like screws, nuts and bolts. The listing does not state a pull strength, so very heavy parts may not hold.

No. The shaft is rigid and extends straight, so it works best in open, straight-line gaps.

It collapses for storage and has a pocket clip for a shirt pocket or tool pouch.

At Zoro, for $25.99, as of our latest check.

2 stores we checked sell it, including AmberPromos - Custom Printed Products, Zoro.

$25.99at ZoroChecked Nov 11

Compared across 2 stores. Prices are checked against each store and labelled with when.

It checks today's price at every store, compares the alternatives and answers in about a minute.