Based on this product's specifications, here are some alternatives and similar models
RECTUS hose fitting 9 mm model 12214, push-in connection for pneumatic tubing
Summary description:
RECTUS model 12214 is a 9 mm hose fitting designed for push-in pneumatic connections. The fitting provides a secure mechanical join for 9 mm pneumatic tubing, suitable for compressed air and general pneumatic systems. It is intended for use in workshops, automation equipment and machinery where reliable, quick-connect tubing joins are required.