Item DescriptionAll have chamfered link plates for optimum shifting performance ConneX-9s1: hollow pins with stainless inner plates and nickel coated outer plates, 275g @ 110 linksConneX-9sX: stainless inner plates with nickel coated outer plates, 290gConneX-9sB: "Black edition" with ultra black-coating of the plates, ensuring optimal corrosion protection ConneX-920: PTFE (blue) coated outer plates for reduced friction, 290gConneX-908: nickel coated inner/outer link plates, 290g ConneX-900: corrosion-resistant steel link plates, 290gIncludes conneX 9-speed (6.5mm) spring-clip connectorItem Specificationsmodel: ConneX-9sBuse: 9spsize: 11/128"width (pin/roller): 6.6/2.2mmlinks: 114color: black/nickel: