Universal Fabrication Interlocking 1018 Steel Bungs Great all around metal fabrication weld tube connector part. Features: -Solid 1018 steel machined and tumble finish parts Overall height when bolted together is 1.86 inches. -No threads machined in bungs . Allows for easy alignment without the risk of damaged threads. -Bolts can be run either direction for tight locations. -1/4-20 Stainless steel socket head cap screws with nut to prevent rust. -Interlocking design for superior build strength. -The bolts go in from either direction which makes assembly in tight spaces easy !!!!!!! -Bungs have a chamfer for great adhesion and lower profile beads. Bungs come in a set.(2 bung halves with 1 bolt/nut as pictured) 1" connectors use 1 bolt and nut. 1"connector fits .095&.065 wall tube.