Wurth WR-BHD Series 2.54mm Box Header Connectors with Locking LeversWR-BHD PCB through hole mount 2 row box header connectors with a 2.54mm pitch and locking levers. These wire to board PCB through hole mount shrouded headers have a black UL04-V0 PBT insulator and gold plated copper alloy contacts.PCB Box headers with part numbers 612 xxx 220 21 have short locking levers.PCB Box headers with part numbers 612 xxx 228 21 have long locking levers.PCB Box headers with part numbers 612 xxx 221 21 are right angle mounting with short locking levers.PCB Box headers with part numbers 612 xxx 229 21 are right angle mounting with long locking levers.For mating products see stock number 771-8373 typically2.54mm Wurth WR-BHD RangeA range of Wurth WR-BHD Box Headers and IDC Sockets.