What radios does the 400-watt rating suit?

It is rated for up to 400 watts, so it handles standard 4-watt CB radios and high-power setups alike. That headroom is more than most drivers need but leaves room for amplifiers.

Will it fit my existing CB mount?

It uses a standard 3/8-inch x 24 thread, the common CB stud size. If your mount accepts that thread, the antenna screws on directly.

How does it compare with a fiberglass CB antenna?

The stainless 17-7 PH whip flexes and resists corrosion better than a fiberglass whip in brush and weather. Fiberglass is lighter and less prone to bending permanently, but the steel whip is the tougher choice for heavy-duty use.

Do I need to tune it?

Yes. Check and adjust SWR with a meter after mounting, since the antenna's position and ground plane affect tuning. Tune before transmitting to protect the radio.

Is it too tall for a pickup?

At 43 inches plus the coil, it needs vertical clearance and a solid mount. On a tall truck it clears most obstacles, but check garage and drive-through heights.