These drums are kettle drums (hemispheres about 1 1/2 feet in diameter on stands). They come in pairs and are unremarkable in appearance. If both of the pair are sounded, all creatures within 120 feet (with the exception of those within a 20-foot-radius safe zone around the drums) are affected as by a fear spell (Will negates DC 16).
Caster Level: 7th
Prerequisites: Craft Wondrous Item, fear Market Price: 30,000 gp; weight: 10 lb.