Chain - TAYA 410H Single Speed 1/2 x 1/8 Black
This chain works with coaster brake bicycle hubs, vintage three speed bicycles and BMX (Whatever that is...). It is the wider of the two most common bike chain sizes and not useable with a derailleur. If you have a modern single speed or "fixed" gear bike, it will work, but you may have a 3/32" pocket and this would not be the correct chain (you'll need a 3/32"). This chain is for 1/8" wide cogs.
This link in from TAYA: TAYA 410H Single Speed and Internally Geared Hub Chain (1/2 x 1/8)