Lifeline performance bottle cage boltslifelines performance bottle cage bolts are made of lightweight alloy they fit all standard bottle cage mounts and come in a pack of four with 10mm washers included featureslightweight alloy constructionfits all standard bottle cage mountsm5 thread4mm hex headincludes 4 x 10mm steel washersweight 15g single 16mm bolt and washerbuy lifeline accessories from chain reaction cycles the worlds largest online bike store