DB9 RS232 Serial to Terminal Female Adapter Connector Breakout Board Black+GreenDB9 Female Adapter Plate Signal Module, RS232 Serial DB9 9-pin to 9 Position Screw Terminal Block. Connector DB9 adapter terminals to facilitate the project, site commissioning equipment. The wire range of the 9 Positions Screw Terminal Block is 22-14AWG. All-copper DB9 Socket, anti-oxidation, contact better. Terminal pitch 3.96mm, screw hole diameter 2mm, need to use a slotted screwdriver width 2mm be removable. Product Name : DB9 Adapter Total Size : 39 x 35 x 15mm/1.6" x 1.3" x 0.6"(L*W*H) Mount Hole Dia. : 3mm / 0.12" Mount Hole Center Distance : 29mm / 1.2" Material : Metal, Electric Part