HC-05 6 Pin Bluetooth to serial RS232 modules that can be programmed as a master or slave module, so are idea for creating short range ( up to 10M ) links for Arduino projects.  The module can be easily programmed using AT commands when connected to a low cost USB to serial module.  Currently stocking the older HC-05 version as we know that these work.  The PCB layout may vary slightly from the picture but is very close.

For more information see the HC-05 Data Sheet

We can generally supply this Product in a higher quantity than stocked in around 3 weeks POA