These are left over from a production project.  Let me know if you are looking for a higher quantity than listed.  I've got a bunch...

Each purchase includes 20 tube connectors.

From the manufacturer website:  

1" 16-18 GAUGE 1/4-20 HEAVY DUTY TUBE CONNECTOR CLIP OD 0.96-0.97" 3044-4-1

Specifications
  • Tube OD (inches): 1"
  • Gauge: 16-18
  • Thread: 1/4-20