A high performance & extremely durable chain designed to give peace of mind for even the most enthusiastic of riders. An anti-rust & Eco-Proteq coating which gives double the protection when compared to KMCs Rust Buster treatment. Hi-Performance Extremely durable Anti Rust Non Directional Eco Pro Te Q coated For Shimano Campagnolo & SRAM 11-speed derailleur systems Spec: 1/2 X 11/128 Pin Length: 5.65 mm 118 Links Weight: 266 grams