ITEM NAME:1Pc RS232 To DB9 D SUB Male Connector 9 Pin Adapter Terminal Board Module n Tt Features: Double Terminals design, smaller; 9 signal line all the leads, name, number clearly marked; All-copper DB9 seat, anti-oxidation, exposure and better; Terminal spacing 5.0MM, screw hole diameter 2.5MM, disassembly is required to use the width 2.5MM flathead screwdriver; Dimensions: Approx. 4.0 x 3.1 x 1.5cm /1.57 x 1.22 x 0.56 inch Package Include:.All-copper DB9 seat, anti-oxidation, exposure and better;.