We listened to the fabricators needs -these connectors are designed to make installations extremely easy! Great universal tubing connector for any fabrication project. Low profile for a clean and streamlined finished assembly. Features : -Solid cold rolled steel machined parts-not cast. -Ends have chamfer for strong and clean welds. -Pocketed cavity holds nut in place for easy tightening. Designed for single stage and dual stage powdercoat clearances. -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 bolts/nut to prevent rust. -Low profile 2-3/8" overall height. -Fits 1-1/2" tubing with .095 wall and .120 . Great for many fabrication uses : Bumpers- spare tire carriers-roof racks-doors-subframes and whatever else you can fab up.