Octane one singlespeed pro chain this is a super light but plenty strong 18 single speed chain there is a simple reason we claim our chain is solid its the same design as our standard chain but with added hollow inner and outer plates for extra weight saving so the light chain also comes with outer plates smaller than inner plates mushroomed pins a special connecting link features type 12 x 18 singlespeed chain length 100 links includes connecting link weight 360g buyoctan