The Six-Six-Zero die-cast cars are an unbranded line of toy vehicles available from various retailers. They are typically sold in multi-car sets (like your 3-pack or common 4, and 6 packs) and are popular as general toys for children.

KEY INFORMATION:

• Brand: Six-Six-Zero (often listed as a non-brand or under a distributor's name like Ryan or ARIA).
• Material: Made with a durable metal alloy body and plastic parts.
• Scale: They are typically 1:64 scale.
• Features: The cars generally have free-moving wheels for push-and-play action and are designed for imaginative play.
• Availability: Fully available.