You really need a chain breaker, like a Park CT=5 http://www.parktool.com/product/mini...hain-tool-ct-5 plenty of other makes also available. You would need to remove the rivets & outer plates so you have both ends which terminate with inner plate, then you can then join them with a masterlink. SRAM, KMC & Connex make these, make sure you use the correct one for your chain speed.