Im planning to re-do my watering system on the coop. Been having issues with leaks in the plastic drip nipples that use gravity with rods and ball bearings inside. Finally found the heavy duty brass nipples that use a silicone spring system to seal the drip nipples ( I had plastic ones before that I used on my first coop but cant find those anymore ? ) anyways, the brass ones are $10 for 20 pcs where the plastic ones were $20 for 5 pieces...wow really ???? Anyways, Ohhh Shiny !!!!!!!!!!!!!!!