Bellows - Stainless Vinlex - Ended. Its body is made of stainless sheet metal and the pump part is made of vinylex. The extra extension at the tip provides easy use by inserting it into the hive entrance hole for bee disinfestation. It is used to minimize the tendency of bees to sting during the maintenance of colony hives. Bees, feeling the smoke, think that danger is coming and start eating honey from the honeycombs, and as a result of the honey they eat, they calm down. But even if you use bellows, bees can still sting you.