Using Reel Engine Design 2.0 Quantum's new Smoke S3 series is the product of a whole new way to build a spinning reel in an all aluminum uni-body construction, which keeps all the gears and key components in precise alignment for a smoother more durable reel, versus more typical 2-part reels. Speaking of gears, Smoke S3 reels feature an all-new asymmetric gear that is forged and machined from high-strength aluminum to allow the gears to mesh better for incredible durability and smoothness.