This is a datagroup of Rigellian Protectorate Space Arm (RPSA) Battlecruisers. The battlecruiser is an original design by Todd Dillen, based on Jack Southerland's Starfire artwork that is found in the Classic Starfire (Third Edition) products. The RPSA never built a Battlecruiser, but this is a rendition of what it might have looked like.
This datagroup is sprued to make it cheaper for versatile plastic.
Starfire miniatures are "squadron scale" (0.5"-5") miniatures designed for the Starfire Quick Start Rules for Miniatures. You can download the rules for free from Wargame Vault from http://www.wargamevault.com/product/214246/Quick-Start-Rules-for-Miniatures
Starfire products can be found at http://www.wargamevault.com/browse/pub/9056/Starfire-Design-Studio