Sram powerlink powerlock chain connectorevery chain is only as strong as its weakest link traditionally the connecting link in contrast the powerlink connection is just as strong and durable as every other link in the chain it can be opened and closed as may times as you want without using any tools sram powerlink connector featurespowerlink means no weak linksnb 2 pieces 2 parts of one chain link and 3 parts of one chain linkimportant the 7 8 and 9 speed links have 2 sides and 1 s