1296333050 Cone Hub: Suitable for ZF16S2220, 16S2230 16-speed manual transmission, a component of rear synchronous drive assembly. Made of high-strength alloy steel by forging with carburizing and quenching on teeth for enhanced hardness. Its precisely machined taper fits synchronizer ring closely to improve shifting synchronization. Strictly produced per OEM tolerance to avoid gear knocking and stiff shifting after installation. Compatible with heavy-duty trucks equipped with above ZF transmissions such as Sitrak and Auman. Wear-resistant and anti-deformation for long-distance overloaded transportation and regular transmission overhaul replacement.