Marine Part DepotStainless Steel Thru-Hull with Mushroom Head, Barbed 1/2"

Used this to make a drain in the Bed Liner of my 2000 Super Duty Pickup Truck.I was tired of all the standing water in the back.After carefully measuring I used a Greenlee #7211BB-1/2 Punch to make a 7/8" hole in both the Bed & LinerWorked Great!The Description says "Mushroom Head" But this had a flat head with a slight recesstowards the middle, which worked well for my application.

they took to long to get. but they were just what I needed.