100mm long pieces of polypropylene material to fit inside polypropylene tubing and form a connection when making polypropylene hoops.
Polypropylene tuning with OD of 12.7mm requires a 9.5mm insert.
Polypropylene tubing with OD of 16mm requires a 12.7mm insert.
Polypropylene tubing with OD of 20mm requires a 16mm insert.
The piece will push in by hand. The join will need to be taped over to hold it in place.
For a more permanent connection rivets or glue are recommended to hold the connector in place and secure the hoop.