The H-12 is a metal single joint needed to assemble the HJ-12 joint set. This product is a different version of an H-1 that can be assembled on a hinge. To build an HJ-12 you just need to group two H-12 around an AP-HINGE, creating a tee joint that can rotate. Without an AP-HINGE, the H-12 will not work on the 28mm pipe.
A Flexpipe Product
For technical details and images, please search for the product using the 80/20 interactive catalogue found here: https://catalogs.8020.net/80-20-Catalog-26/C/.
