BMX or ANY CYCLE WITH 1/8CHAIN SNAP-TOGETHER LINK,BIKE CHAIN EASY JOINING LINKJOINING LINK TO FIT 1/2″ x 1/8″ CHAINS INCLUDING SINGLE SPEED BIKES, BMX AND 3 SPEED CHAINS THAT ARE SIZE 1/8″GREAT MODERN WAY TO JOIN ANY 1/8CHAINPIN LENGTH IS APPROX 10.7mmSNAP TOGETHER FITTING (NO TOOLS REQUIRED)EXTRA SPECIAL OFFER ; BUY ONE & WE SEND YOU A SECOND ONE FREE , SO YOU CAN USE ON TWO BIKES OR KEEP ONE AS A SPAREWEALSO HAVE A LISTINGFOR A JOB LOT OF 10 OF THESE – PLEASE CHECK OUR EBAY LISTINGS