High Quality: Made of 304 stainless steel, providing strength, solid body won’t rust Practical Design: With an open end, a small flange, a round hole, a threaded inner wall and a partially non-slip surface, This flat head rivet nut has a good performance of fastener function. Easy to use: The rivet screw often has a built-in function, such as a slot, to facilitate the tightening of the fastener. 20 Rivet Nut Tool Kit Convenience: The adapter is a piece located between each socket and the front end of the assembly tool. It is not a tool. After-Sales Service: We are confident in the quality of our products, which will not disappoint you. Please contact us if you have any problems with our product, then I will reply you ASAP within 12 hours