Save time and create professional quality mounts using these tophat style, blind threaded bungs. The blind threaded hole makes these bungs perfect for mounting gas tanks, oil tanks, or any other item requiring a leak free mount. Proudly made in the USA from premium American 1018 cold rolled steel for easy welding. These bungs install easily by inserting into a 5/8" diameter hole and welding around the 7/8" diameter flange. See photos for all dimensions. Sold in packs of 4.