The Comet SBB-2 is a Dual Band Mobile Antenna that does 2 meter and 440 MHz. It is popular because of its height.
Specifications:
Dual Band 2M/70cm mobile antenna
Gain & Wave:
146 MHz 2.15dBi 1⁄4 wave
446 MHz 3.8dBi 5⁄8 wave
VSWR: 1.5:1 or less
Max Power: 100 watts
Length: 18"
Connector: PL-259
NatCommGroup products (Comet, Daiwa, Maldol, Create, Lido, and NCG brands) are under factory warranty for one year from date of purchase