Bottom stops are the metal components found toward the bottom end of the zipper that closes off the zipper. Bottom stops are only found on closed-end zippers. They are also known as "bottom stoppers." Bottom stops can also be used to convert separating zippers to closed-end zippers. 

#7 stops are recommended for #7 and #6 zippers.

Not sure which stop to get?  

- Silver stops pair best with nickel and aluminum metal zippers. They also pair well with any color molded plastic or nylon coil zipper.

- Brass stops pair best with brass metal zippers and with molded plastic zippers and nylon coil zippers with yellow hues (think yellow, gold molded plastic zippers).

- Antique brass stops pair best with antique brass metal zippers and with molded plastic zippers and nylon coil zippers with brown hues.

- White stops pair best with white molded plastic zippers and white nylon coil zippers.

- Black stops pair best with black molded plastic zippers and black nylon coil zippers.

Note: Bottom stops are used as top stops on nylon coil chain.