Flattop technology is so much more than just a striking appearance. It makes our 12-speed chain lighter, stronger, and more durable than anything that came before it. The Apex chain uses the same construction as the Rival and Force chains, with a polished grey finish. 12-Speed Flattop Technology: quieter, stronger, and more durable Polished metal with a grey finish Flattop technology is more than just looks. It makes the chain lighter, stronger, more durable, and quieter. This polished chain is made with the same construction as the Force and Rival chains. 12 speed Includes Flattop PowerLock SRAM Article number: 733402 EAN code: 710845886218 Supplier number: 00.2518.060.013 Retail packaging: Yes