These 20" long lens comes in two options and is designed for use with the Elimadent cordless LED light. The first option is the Original replacement lens.  The second option...

These 14" long lens comes in two options and is designed for use with the Elimadent cordless LED light. The first option is the Original replacement lens.  The second option...

Spinal Cord Double Socket direct replacement           Consist of 2 pieces that bolt together allowing you to adjust the tension of link system. 

Spinal Cord 3/4" NPT Connector direct replacement                          NPT is the type of threading used in USA